The Wordsmith Dictionary

as tro cyte |ˈastrəˌsīt ˈæstrəsaɪt | ▶noun Anatomy a star-shaped glial cell of the central nervous system. DERIVATIVES as tro cyt ic |ˌastrəˈsitik |adjective

astrodome

as tro dome |ˈastrəˌdōm ˈæstroʊdoʊm | ▶noun 1 a domed window in an aircraft for astronomical observations. 2 (the Astrodome ) an enclosed stadium in Houston with a domed roof.

astrogation

as tro ga tion |ˌastrəˈgāSHən ˌæstroʊˈɡeɪʃən | ▶noun (in science fiction ) navigation in outer space. DERIVATIVES as tro ga tor |ˈastrəˌgātər |noun ORIGIN 1930s: blend of astro- and navigation .

astroid

as troid |ˈastroid ˈæstrɔɪd | ▶noun Mathematics a hypocycloid with four cusps (like a square with concave sides ).

astrolabe

as tro labe |ˈastrəˌlāb ˈæstrəˌleɪb | ▶noun chiefly historical an instrument formerly used to make astronomical measurements, typically of the altitudes of celestial bodies, and in navigation for calculating latitude, before the development of the sextant. In its basic form (known from classical times ), it consists of a disk with the edge marked in degrees and a pivoted pointer. ORIGIN late Middle English: from Old French astrelabe, from medieval Latin astrolabium, from Greek astrolabon, neuter of astrolabos ‘star-taking. ’

astrology

as trol o gy |əˈsträləjē əˈstrɑləʤi | ▶noun the study of the movements and relative positions of celestial bodies interpreted as having an influence on human affairs and the natural world. Ancient observers of the heavens developed elaborate systems of explanation based on the movements of the sun, moon, and planets through the constellations of the zodiac, for predicting events and for casting horoscopes. By 1700 astrology had lost intellectual credibility in the West, but continued to have popular appeal. Modern astrology is based on that of the Greeks, but other systems are extant, notably those of China and India. DERIVATIVES as trol o ger |-jər |noun, as tro log i cal |ˌastrəˈläjikəl |adjective, as trol o gist |-jist |noun ORIGIN late Middle English: from Old French astrologie, from Latin astrologia, from Greek, from astron ‘star. ’ The term (in full natural astrology ) originally denoted the practical uses of astronomy, applied in the measurement of time and the prediction of natural phenomena. The current sense (in full judicial astrology, relating to human affairs ) dates from the mid 16th cent.

astrometric binary

as tro met ric bi na ry |ˌastrōˈmetrik ˈbīnərē ˌæstroʊˈmɛtrɪk ˈbaɪnəri | ▶noun Astronomy a binary star system in which one companion is invisible, but is known to be present from its effect on measurements relating to the other.

astrometry

as trom e try |əˈsträmitrē əˈstrɑmətri | ▶noun the measurement of the positions, motions, and magnitudes of stars. DERIVATIVES as tro met ric |ˌastrōˈmetrik |adjective

astronaut

as tro naut |ˈastrəˌnôt ˈæstrəˌnɔt | ▶noun a person who is trained to travel in a spacecraft. DERIVATIVES as tro nau ti cal |ˌastrəˈnôtikəl |adjective ORIGIN 1920s: from astro-, on the pattern of aeronaut and aquanaut .

astronautics

as tro nau tics |ˌastrəˈnôtiks ˌæstrəˈnɔdɪks | ▶noun the science and technology of human space travel and exploration.

astronavigation

as tro nav i ga tion |ˌastrōˌnaviˈgāSHən ˌæstroʊˌnævəˈɡeɪʃən | ▶noun determination of the position and course of an aircraft or a spacecraft by means of observation of the stars. DERIVATIVES as tro nav i ga tor |-ˈnaviˌgātər |noun ORIGIN mid 20th cent.: from astro- + navigation .

astronomer

as tron o mer |əˈstränəmər əˈstrɑnəmər | ▶noun an expert in or student of astronomy.

astronomical

as tro nom i cal |ˌastrəˈnämikəl ˈˌæstrəˈnɑməkəl | ▶adjective 1 of or relating to astronomy. 2 informal (of an amount ) extremely large: he wanted an astronomical fee. DERIVATIVES as tro nom ic adjective astronomical ( sense 2 ), as tro nom i cal ly |-ik (ə )lē |adverb ORIGIN mid 16th cent.: via Latin from Greek astronomikos, from astronomia (see astronomy ).

astronomical unit

as tro nom i cal u nit |ˈˌæstrəˈnɑməkəl ˈjunət |(abbr.: AU ) ▶noun Astronomy a unit of measurement equal to 149.6 million kilometers, the mean distance from the center of the earth to the center of the sun.

astronomical year

as tro nom i cal year See year ( sense 1 ).

astronomy

as tron o my |əˈstränəmē əˈstrɑnəmi | ▶noun the branch of science that deals with celestial objects, space, and the physical universe as a whole. In ancient times, observation of the sun, moon, stars, and planets formed the basis of timekeeping and navigation. Astronomy was greatly furthered by the invention of the optical telescope, but modern observations are made in all parts of the spectrum, including X-ray and radio frequencies, using terrestrial and orbiting instruments and space probes. ORIGIN Middle English (also denoting astrology ): from Old French astronomie, from Latin astronomia, from Greek, from astronomos (adjective ) ‘star-arranging. ’

astrophotography

astrophysics

as tro phys ics |ˌastrōˈfiziks ˈˌæstroʊˈfɪzɪks | ▶noun the branch of astronomy concerned with the physical nature of stars and other celestial bodies, and the application of the laws and theories of physics to the interpretation of astronomical observations. DERIVATIVES as tro phys i cal |-ikəl |adjective, as tro phys i cist |-isist |noun

AstroTurf

As tro Turf |ˈastrōˌtərf ˈæstroʊtɜːrf | ▶noun trademark an artificial grass surface, used for athletic fields. ORIGIN 1960s: from astrodome ( sense 1 ), where it was first used, + turf .

astroturfing

astroturfing ▶noun [ mass noun ] the deceptive practice of presenting an orchestrated marketing or public relations campaign in the guise of unsolicited comments from members of the public. ORIGIN 1990s: from AstroTurf, the idea being that such a campaign is an artificial version of a grass-roots campaign (see grass roots ).

Oxford Dictionary

astro-

astro- |ˈastrəʊ | ▶combining form relating to the stars or celestial objects: astrodome | astrophotography. • relating to outer space: astrochemistry. ORIGIN from Greek astron ‘star ’.

astro-archaeology

astro-archae ¦ology ▶noun another term for archaeoastronomy.

astrobiology

astro |biol ¦ogy ▶noun [ mass noun ] the branch of biology concerned with the study of life on earth and in space. DERIVATIVES astrobiological adjective, astrobiologist noun

astrobleme

astrobleme |ˈastrəʊbliːm | ▶noun Geology an eroded remnant of a large crater made by the impact of a meteorite or comet. ORIGIN 1960s: from Greek astron ‘star ’ + blēma ‘wound ’.

astrochemistry

astro |chem ¦is ¦try |astrəʊˈkɛmɪstri | ▶noun [ mass noun ] the study of molecules and ions occurring in stars and interstellar space. DERIVATIVES astrochemical adjective, astrochemist noun

astrocompass

astro |com ¦pass |ˈastrəʊˌkʌmpəs | ▶noun an instrument designed to indicate direction with respect to the stars.

astrocyte

astrocyte |ˈastrə (ʊ )sʌɪt | ▶noun Anatomy a star-shaped glial cell of the central nervous system. DERIVATIVES astrocytic adjective

astrodome

astro |dome |ˈastrədəʊm | ▶noun 1 chiefly US an enclosed stadium with a domed roof. 2 a domed window in an aircraft for astronomical observations.

astrogation

astrogation |ˌastrə (ʊ )ˈgeɪʃ (ə )n | ▶noun [ mass noun ] (in science fiction ) navigation in outer space. DERIVATIVES astrogator noun ORIGIN 1930s: blend of astro- and navigation .

astroid

astroid |ˈastrɔɪd | ▶noun Mathematics a hypocycloid with four cusps (like a square with concave sides ).

astrolabe

astrolabe |ˈastrəleɪb | ▶noun chiefly historical an instrument used to make astronomical measurements, typically of the altitudes of celestial bodies, and in navigation for calculating latitude, before the development of the sextant. ORIGIN late Middle English: from Old French astrelabe, from medieval Latin astrolabium, from Greek astrolabon, neuter of astrolabos ‘star-taking ’.

astrology

as ¦trol |ogy |əˈstrɒlədʒi | ▶noun [ mass noun ] the study of the movements and relative positions of celestial bodies interpreted as having an influence on human affairs and the natural world. Ancient observers of the heavens developed elaborate systems of explanation based on the movements of the sun, moon, and planets through the constellations of the zodiac, for predicting events and for casting horoscopes. By 1700 astrology had lost intellectual credibility in the West, but continued to have popular appeal. Modern astrology is based on that of the Greeks, but other systems are extant, e.g. that of China. DERIVATIVES astrologer noun, astrological |astrəˈlɒdʒɪk (ə )l |adjective, astrologically adverb, astrologist noun ORIGIN late Middle English: from Old French astrologie, from Latin astrologia, from Greek, from astron ‘star ’.

astrometric binary

astro |metric bin ¦ary ▶noun Astronomy a binary star system in which one companion is invisible, but is known to be present from its effect on measurements relating to the other.

astrometry

as ¦trom |etry |əˈstrɒmɪtri | ▶noun [ mass noun ] the measurement of the positions, motions, and magnitudes of stars. DERIVATIVES astrometric adjective

astronaut

astronautics

astro |naut ¦ics |astrəˈnɔːtɪks | ▶plural noun [ treated as sing. ] the science and technology of space travel and exploration.

astronavigation

astronomer

as ¦tron |omer |əˈstrɒnəmə | ▶noun an expert in or student of astronomy.

astronomical

astro |nom ¦ic ¦al |astrəˈnɒmɪk (ə )l | ▶adjective 1 relating to astronomy. 2 informal (of an amount ) extremely large: he wanted an astronomical fee. DERIVATIVES astronomic adjective astronomical ( sense 2 ), astronomically adverb ORIGIN mid 16th cent.: via Latin from Greek astronomikos, from astronomia (see astronomy ).

astronomical unit

astronomical unit (abbrev.: AU ) ▶noun Astronomy a unit of measurement equal to 149.6 million kilometres, the mean distance from the centre of the earth to the centre of the sun.

astronomical year

astro |nom ¦ic ¦al year ▶noun see year ( sense 1 ).

astronomy

as ¦tron |omy |əˈstrɒnəmi | ▶noun [ mass noun ] the branch of science which deals with celestial objects, space, and the physical universe as a whole. In ancient times, observation of the sun, moon, stars, and planets formed the basis of timekeeping and navigation. Astronomy was greatly furthered by the invention of the telescope, but modern observations are made in all parts of the spectrum, including X-ray and radio frequencies, using terrestrial and orbiting instruments and space probes. ORIGIN Middle English (also denoting astrology ): from Old French astronomie, from Latin astronomia, from Greek, from astronomos (adjective ) ‘star-arranging ’.

astrophotography

astro ¦pho ¦tog ¦raphy |ˌastrə (ʊ )fəˈtɒgrəfi | ▶noun [ mass noun ] the use of photography in astronomy. DERIVATIVES astrophotographer noun, astrophotographic adjective

astrophysics

astro |phys ¦ics |astrə (ʊ )ˈfɪzɪks | ▶plural noun [ treated as sing. ] the branch of astronomy concerned with the physical nature of stars and other celestial bodies, and the application of the laws and theories of physics to the interpretation of astronomical observations. DERIVATIVES astrophysical adjective, astrophysicist |-sɪst |noun

AstroTurf

Astro ¦Turf |ˈastrətəːf | ▶noun [ mass noun ] trademark an artificial grass surface, used for sports fields. ORIGIN 1960s: from astrodome ( sense 1 ) (where it was first used ) + turf .

astroturfing

American Oxford Thesaurus

astrology

astrology noun horoscopy; horoscopes.

astronaut

astronaut noun spaceman, spacewoman, cosmonaut, space traveler, space cadet.

astronomical

astronomical adjective 1 astronomical alignments: planetary, stellar; celestial, astral. 2 informal the sums he has paid are astronomical: huge, enormous, very large, prodigious, monumental, colossal, vast, gigantic, massive; substantial, considerable, sizable, hefty; inordinate; informal astronomic, whopping, humongous, ginormous. ANTONYMS tiny.

Oxford Thesaurus

astrology

astrology noun horoscopy, stargazing; horoscopes; rare astromancy.

astronaut

astronaut noun spaceman, spacewoman, cosmonaut, space traveller, space pilot, space flyer, space cadet; N. Amer. informal jock.

astronomical

astronomical adjective 1 they studied Stonehenge in terms of astronomical alignments: celestial, planetary, stellar, astronomic, heavenly. 2 informal the sums he has paid out are astronomical. See huge.

astronomy

astronomy noun WORD LINKS astronomy Urania the Muse of astronomy Word Links sections supply words that are related to the headword but do not normally appear in a thesaurus because they are not actual synonyms.

Duden Dictionary

astro-

as t ro-, As t ro-, as tro- As tro- Präfix Astro- zu griechisch ástron = Stern (bild ) Bestimmungswort in Zusammensetzungen mit der Bedeutung Gestirn-, Stern-, Weltraum-

Astrobiologie

As t ro bio lo gie , As tro bio lo gie Substantiv, feminin , die |A strobiologie |die Astrobiologie; Genitiv: der Astrobiologie Wissenschaft vom Leben auf anderen Himmelskörpern und im Weltraum

Astrodynamik

As t ro dy na mik, As tro dy na mik Substantiv, feminin , die |A strodynamik |die Astrodynamik; Genitiv: der Astrodynamik 1 Teilgebiet der Astrophysik , auf dem man sich mit der Dynamik 1 von Sternsystemen o. Ä. befasst 2 Teilgebiet der Raumflugtechnik, auf dem man sich mit der Bewegung künstlicher Satelliten 3 befasst

Astrofotometrie

As t ro fo to me t rie , As t ro pho to me t rie As tro fo to me trie Substantiv, feminin , die Astrophotometrie |A strofotometrie A strophotometrie |die Astrofotometrie; Genitiv: der Astrofotometrie die Astrophotometrie; Genitiv: der Astrophotometrie Messung der Helligkeit von Gestirnen

Astrognosie

As t ro g no sie , As tro gno sie Substantiv, feminin , die |Astrognos ie |die Astrognosie; Genitiv: der Astrognosie griechisch-neulateinisch Kenntnis des Sternenhimmels, wie er dem bloßen Auge erscheint

Astrograf

As t ro graf , As t ro graph As tro graf Substantiv, maskulin , der Astrograph |Astrogr a f Astrogr a ph |der Astrograf; Genitiv: des Astrografen, Plural: die Astrografen der Astrograph; Genitiv: des Astrographen, Plural: die Astrographen zu griechisch ástron = Stern (bild ) und gráphein = schreiben 1 astronomisches Fernrohr zur fotografischen Aufnahme von Gestirnen 2 Vorrichtung zum Zeichnen von Sternkarten

Astrografie

As t ro gra fie , As t ro gra phie As tro gra fie Substantiv, feminin , die Astrographie |Astrograf ie Astrograph ie |die Astrografie; Genitiv: der Astrografie, Plural: die Astrografien die Astrographie; Genitiv: der Astrographie, Plural: die Astrographien Sternbeschreibung

astrografisch

as t ro gra fisch , as tro gra phisch Adjektiv astrographisch |astrogr a fisch astrogr a phisch |die Astrografie betreffend

Astrokompass

As t ro kom pass , As tro kom pass Substantiv, maskulin , der |A strokompass |der Astrokompass; Genitiv: des Astrokompasses, Plural: die Astrokompasse Gerät zur Bestimmung der Nordrichtung unter Bezug auf einen Himmelskörper

Astrolabium

As t ro la bi um , As tro la bi um Substantiv, Neutrum , das |Astrol a bium |das Astrolabium; Genitiv: des Astrolabiums, Plural: die Astrolabien griechisch-mittellateinisch altes astronomisches Instrument zur lagemäßigen Bestimmung von Gestirnen

Astrolatrie

As t ro la t rie , As tro la trie Substantiv, feminin , die |Astrolatr ie |die Astrolatrie; Genitiv: der Astrolatrie griechisch-neulateinisch Sternverehrung

Astrologe

As t ro lo ge , As tro lo ge Substantiv, maskulin , der Astrologin |Astrol o ge |der Astrologe; Genitiv: des Astrologen, Plural: die Astrologen lateinisch astrologus < griechisch astrológos jemand, der sich mit Astrologie beschäftigt; Sterndeuter

Astrologie

As t ro lo gie , As tro lo gie Substantiv, feminin , die |Astrolog ie |die Astrologie; Genitiv: der Astrologie lateinisch astrologia < griechisch astrología

Astrologin

As t ro lo gin , As tro lo gin Substantiv, feminin , die |Astrol o gin |die Astrologin; Genitiv: der Astrologin, Plural: die Astrologinnen weibliche Form zu Astrologe

astrologisch

as t ro lo gisch, as tro lo gisch Adjektiv |astrol o gisch |lateinisch astrologicus < griechisch astrologikós a die Astrologie betreffend, zur Astrologie gehörend b mit den Mitteln der Astrologie erfolgend

Astromantie

As t ro man tie , As tro man tie Substantiv, feminin , die |Astromant ie |die Astromantie; Genitiv: der Astromantie griechisch-neulateinisch das Wahrsagen aus den Sternen

Astrometeorologie

As t ro me te o ro lo gie , As tro me te o ro lo gie Substantiv, feminin , die |A strometeorologie |die Astrometeorologie; Genitiv: der Astrometeorologie 1 Wissenschaft von den Atmosphären 1 anderer Himmelskörper besonders der Planeten 2 Lehre vom Einfluss der Gestirne auf das Wetter

Astrometer

As t ro me ter , As tro me ter Substantiv, Neutrum , das |Astrom e ter |das Astrometer; Genitiv: des Astrometers, Plural: die Astrometer Gerät zum Messen der Helligkeit von Sternen

Astrometrie

As t ro me t rie , As tro me trie Substantiv, feminin , die |Astrometr ie |die Astrometrie; Genitiv: der Astrometrie Zweig der Astronomie, der sich mit der Messung der Ortsveränderungen von Sternen beschäftigt

Astronaut

As t ro naut , As tro naut Substantiv, maskulin , der Astronautin |Astron au t |der Astronaut; Genitiv: des Astronauten, Plural: die Astronauten zu griechisch naútēs = Seemann Person, die an einem Flug in den Weltraum teilnimmt

Astronautik

As t ro nau tik, As tro nau tik Substantiv, feminin , die |Astron au tik |[Wissenschaft von der ] Raumfahrt

Astronautin

As t ro nau tin , As tro nau tin Substantiv, feminin , die |Astron au tin |die Astronautin; Genitiv: der Astronautin, Plural: die Astronautinnen weibliche Form zu Astronaut

astronautisch

as t ro nau tisch , as tro nau tisch Adjektiv |astron au tisch |die Raumfahrt betreffend; vgl. kosmonautisch

Astronavigation

As t ro na vi ga ti on , As tro na vi ga ti on Substantiv, feminin , die |A stronavigation |die Astronavigation; Genitiv: der Astronavigation 1 Navigation unter Verwendung von Messdaten angepeilter Himmelskörper 2 Bestimmung von Ort und Kurs eines Raumschiffs nach den Sternen

Astronom

As t ro nom , As tro nom Substantiv, maskulin , der |Astron o m |der Astronom; Genitiv: des Astronomen, Plural: die Astronomen spätlateinisch astronomus < griechisch astronómos Wissenschaftler auf dem Gebiet der Astronomie

Astronomie

As t ro no mie , As tro no mie Substantiv, feminin , die |Astronom ie |die Astronomie; Genitiv: der Astronomie lateinisch astronomia < griechisch astronomía Wissenschaft von den Himmelskörpern

Astronomin

As t ro no min , As tro no min Substantiv, feminin , die |Astron o min |weibliche Form zu Astronom

astronomisch

as t ro no misch, as tro no misch Adjektiv |astron o misch |lateinisch astronomicus < griechisch astronomikós 1 die Astronomie betreffend, zu ihr gehörend, mit ihren Mitteln erfolgend astronomische Einheit mittlere Entfernung Erde –Sonne als astronomische Längeneinheit Abkürzung: AE | astronomische Uhr in der Astronomie, Geophysik u. a. gebrauchte Präzisionsuhr | astronomische Zeichen 2 emotional die Vorstellung von der Größe einer Menge, die Höhe eines Betrages o. Ä. übersteigend; überaus groß astronomische Zahlen, Gehälter | der Preisanstieg war astronomisch

Astrophyllit

As t ro phyl lit , As tro phyl lit Substantiv, maskulin , der |Astrophyll i t auch …ˈlɪt |der Astrophyllit; Genitiv: des Astrophyllits, Plural: die Astrophyllite ein Mineral

Astrophysik

As t ro phy sik, As tro phy sik Substantiv, feminin , die |A strophysik auch …ˈziːk auch, österreichisch nur …zɪk |die Astrophysik; Genitiv: der Astrophysik Teilgebiet der Astronomie, das den Aufbau und die physikalische Beschaffenheit der Gestirne und des Weltalls zum Gegenstand hat

astrophysikalisch

as t ro phy si ka lisch , as tro phy si ka lisch Adjektiv |a strophysikalisch auch …ˈkaː …|die Astrophysik betreffend, zu ihr gehörend

Astrophysiker

As t ro phy si ker, As tro phy si ker Substantiv, maskulin , der |A strophysiker auch …ˈfyː …|der Astrophysiker; Genitiv: des Astrophysikers, Plural: die Astrophysiker Wissenschaftler auf dem Gebiet der Astrophysik

Astrophysikerin

As t ro phy si ke rin , As tro phy si ke rin Substantiv, feminin , die |A strophysikerin auch …ˈfyː …|weibliche Form zu Astrophysiker

Astrospektroskopie

As t ro spek t ro s ko pie , As tro spek tro sko pie Substantiv, feminin , die |A strospektroskopie auch …ˈpiː |die Astrospektroskopie; Genitiv: der Astrospektroskopie Untersuchung des Spektrums von Gestirnen

French Dictionary

astrolabe

astrolabe n. m. nom masculin Instrument d ’astronomie. Note Technique Attention au genre masculin de ce nom: un astrolabe.

astrologie

astrologie n. f. nom féminin Art qui cherche à prévoir l ’avenir par l ’examen des astres. Note Sémantique Ne pas confondre avec le nom astronomie, science des astres. Prononciation Les deux o sont ouverts, [astrɔlɔʒi ]

astrologique

astrologique adj. adjectif Qui appartient à l ’astrologie. : Des prédictions astrologiques. Prononciation Les deux o sont ouverts, [astrɔlɔʒik ]

astrologue

astrologue n. m. et f. nom masculin et féminin Personne qui pratique l ’astrologie. : L ’astrologue propose des horoscopes. Note Sémantique Ne pas confondre avec le nom astronome, spécialiste de l ’astronomie. Prononciation Les deux o sont ouverts, [astrɔlɔg ]

astronaute

astronaute n. m. et f. nom masculin et féminin Voyageur de l ’espace. : Roberta Bondar a été la première astronaute canadienne. Note Technique Les astronautes sont américains, les cosmonautes, russes. Prononciation La lettre o et les lettres au se prononcent comme dans faute, [astronot ]

astronautique

astronautique n. f. nom féminin Science qui a pour objet la navigation spatiale. Note Sémantique Ne pas confondre avec le nom aéronautique, science et technique de la navigation aérienne. Prononciation La lettre o et les lettres au se prononcent comme dans faute, [astronotik ]

astronef

astronef n. m. nom masculin Vaisseau spatial. : Un astronef perdu. Note Technique Attention au genre masculin de ce nom: un astronef.

astronome

astronome n. m. et f. nom masculin et féminin Personne qui connaît et pratique l ’astronomie. : L ’astronome étudie le ciel avec un télescope. Note Sémantique Ne pas confondre avec le nom astrologue, spécialiste de l ’astrologie. Prononciation Les deux o sont ouverts, [astrɔnɔm ]

astronomie

astronomie n. f. nom féminin Science des astres et de l ’univers. Note Sémantique Ne pas confondre avec le nom astrologie, art de prévoir le destin par l ’examen des astres. Prononciation Les deux o sont ouverts, [astrɔnɔmi ]

astronomique

astronomique adj. adjectif Qui se rapporte à l ’astronomie. : Un observatoire astronomique. LOCUTIONS Chiffres astronomiques. figuré Chiffres très grands. Prix astronomique. figuré Prix exagéré.

astrophysicien

astrophysicien astrophysicienne n. m. et f. nom masculin et féminin Astronome spécialiste de l ’astrophysique. : Hubert Reeves est un astrophysicien.

astrophysique

astrophysique n. f. nom féminin Étude des astres par la méthode de la physique.

Spanish Dictionary

astro

astro nombre masculino 1 Cuerpo celeste :estrellas, planetas, satélites, cometas y asteroides son astros; estudiaba el curso de los astros .2 Persona que destaca en una actividad o que es muy admirada, especialmente en el deporte o en el cine :fue el gran astro del cine mexicano de la época; el talento del astro argentino y un alto rendimiento en el juego le han dado al conjunto del sur dos de los últimos cuatro mundiales .SINÓNIMO estrella, figura .ETIMOLOGÍA Préstamo (s. xvi ) del latín astrum y este del griego ástron ‘astro ’, ‘constelación ’, ‘sol ’, derivado de astér ‘estrella ’. De la raíz indoeuropea de estrella (V.).

astro-

astro- Elemento prefijal de origen latino que entra en la formación de nombres y adjetivos con el significado de: (i )Astro :astrología, astrobiología, astrolabio, astrodinámica .(ii )Que está relacionado con la navegación espacial :astronave, astronauta .

astrobiología

astrobiología nombre femenino Ciencia que estudia la vida en los astros .

astrodinámica

astrodinámica nombre femenino Parte de la astronomía que estudia las leyes del movimiento de los astros .

astrofísica

astrofísica nombre femenino Parte de la astronomía que estudia las propiedades de los astros así como su origen y evolución, utilizando los métodos y las leyes de la física :la termodinámica y la astrofísica dan al hombre grandeza intelectual y dominio sobre el cosmos .

astrofísico, -ca

astrofísico, -ca adjetivo 1 De la astrofísica o relacionado con ella :observatorio astrofísico .2 nombre masculino y femenino Persona que se dedica al estudio de la astrofísica .

astrolabio

astrolabio nombre masculino Instrumento de navegación usado para orientarse que permite determinar la altura de un astro y deducir, según esta, la hora y la latitud :el astrolabio esférico consiste en la representación de las esferas terrestre y celeste que al moverse correctamente una con la otra dan la posición exacta; el islam difundió el astrolabio plano en el siglo viii .ETIMOLOGÍA Préstamo (s. xiii ) del griego astrolábion, formado con ástron ‘astro ’, ‘constelación ’, ‘sol ’, y el verbo lambánein ‘coger, tomar (la altura )’. De la raíz indoeuropea de estrella (V.) y lema (V.).

astrología

astrología nombre femenino Estudio de la posición y el movimiento de los astros, a través de cuya interpretación se pretende conocer el destino de las personas y pronosticar los sucesos terrestres :muy característicos de la cultura bizantina son los libros de astrología, alquimia, oráculos, enigmas, magia y oniromancia .

astrológico, -ca

astrológico, -ca adjetivo De la astrología o relacionado con ella :signo astrológico; corriente astrológica; coordenadas astrológicas .

astrólogo, -ga

astrólogo, -ga nombre masculino y femenino Persona que se dedica a la astrología .

astromelia

astromelia nombre femenino Colomb Arbusto originario de Asia, de flores de color rojo, con largos estambres del mismo color; tiene uso ornamental .

astrometría

astrometría nombre femenino Parte de la astronomía que se dedica a la medición de la posición de los astros y a la determinación de sus movimientos .

astrométrico, -ca

astrométrico, -ca adjetivo De la astrometría o relacionado con ella .

astronauta

astronauta nombre común Persona que forma parte de la tripulación de una nave espacial o que está entrenada y preparada para hacerlo .SINÓNIMO cosmonauta .ETIMOLOGÍA Compuesto de astro (V.) y nauta (V.), del latín nauta ‘marinero, navegante ’, para designar la persona que navega por el espacio .

astronáutica

astronáutica nombre femenino Ciencia y técnica de la navegación espacial, saliendo de la atmósfera de la Tierra .SINÓNIMO cosmonáutica .

astronáutico, -ca

astronáutico, -ca adjetivo De la astronáutica o relacionado con ella :plan astronáutico .

astronave

astronave nombre femenino Aeronave capaz de navegar fuera de la atmósfera terrestre, especialmente construida para explorar el espacio, satélites u otros planetas .SINÓNIMO cosmonave .

astronomía

astronomía nombre femenino Ciencia que estudia la estructura y la composición de los astros, su localización y las leyes de sus movimientos :la astronomía se divide en tres ramas principales: la astronomía fundamental, la astrofísica y la cosmología .

astronómico, -ca

astronómico, -ca adjetivo 1 De la astronomía o relacionado con ella :observatorio astronómico; instrumento astronómico; calendario astronómico .2 Que es desmesuradamente grande :cantidad astronómica; cifra astronómica; precios astronómicos; distancias astronómicas . VÉASE año astronómico; día astronómico; mapa astronómico; mes astronómico .

astrónomo, -ma

astrónomo, -ma nombre masculino y femenino Persona que se dedica a la astronomía .

astroso, -sa

astroso, -sa adjetivo 1 [persona ] Que presenta un aspecto descuidado, va mal vestido y sucio, o no cuida sus cosas .SINÓNIMO desastrado .2 Que está sucio, destrozado o descuidado :una manta astrosa .

Sanseido Wisdom Dictionary

astro-

as tro- /ǽstrə /接頭辞星 (の ), 天体 (の )▸ astro -navigation 天測航法

astrologer

as trol o ger /əstrɑ́lədʒə r |-trɔ́l -/名詞 C 占星術師 .

astrological

as tro log i cal /æ̀strəlɑ́dʒɪk (ə )l |-lɔ́dʒ -/形容詞占星術 [学 ]の .～ly 副詞占星術的に .

astrology

as trol o gy /əstrɑ́lədʒi |-trɔ́l -/〖astro (星 )logy (言葉 )〗名詞 U 占星術 [学 ].

astronaut

as tro naut /ǽstrənɔ̀ːt / (! 強勢は第1音節 ) 名詞複～s /-ts /C 宇宙飛行士 (!旧ソ連の宇宙飛行士はcosmonaut ) .

astronomer

as tron o mer /əstrɑ́nəmə r |-trɔ́n -/名詞複～s /-z /C 天文学者 .

astronomic

as tro nom ic /æ̀strənɑ́mɪk |-nɔ́m -/形容詞＝astronomical 2 .

astronomical

as tro nom i cal /æ̀strənɑ́mɪk (ə )l |-nɔ́m -/形容詞 1 〖通例名詞の前で〗天文 (学上 )の ▸ an astronomical telescope 天体望遠鏡 2 ｟くだけて｠〈金額量などが〉天文学的数字の, けたはずれに大きい ▸ astronomical costs 莫大（ばくだい）な費用～̀ ú nit 〘天〙天文単位〘太陽地球間の平均距離1.496 ×10 11 m; ｟略｠AU 〙.～̀ y é ar ＝solar year .à s tro n ó m i cal ly 副詞天文学上, けたはずれに .

astronomy

as tron o my /əstrɑ́nəmi |-trɔ́n -/ (! 強勢は第2音節 ) 〖astro (星 )nomy (学 )〗名詞 U 天文学 .

astrophysicist

à stro ph ý sicist 名詞 C 天体物理学者 .

astrophysics

à stro ph ý sics 名詞〖単数扱い〗天体物理学 .

AstroTurf

Á s tro T ù rf /ǽstroʊ -/名詞｟商標｠アストロターフ〘野球場などの人工芝; Astroturf, astroturfとも〙.