English-Thai Dictionary

penumbra

N ส่วน เงามัว ที่ ล้อมรอบ เงามืด (ทาง ดาราศาสตร์  shadow umbra darkness brightness suan-ngo-mue-ti-lomngo-mud

 

Webster's 1828 Dictionary

PENUMBRA

n.[L. pene, almost, and umbra, shade. ] In astronomy, a partial shade or obscurity on the margin of the perfect shade in an eclipse, or between the perfect shade, where the light is entirely intercepted, and the full light.

 

Webster's 1913 Dictionary

PENUMBRA

Pe *num "bra, n. Etym: [NL. , fr. L. paene almost + umbra shade. ]

 

1. An incomplete or partial shadow.

 

2. (Astron.)

 

Defn: The shadow cast, in an eclipse, where the light is partly, but not wholly, cut off by the intervening body; the space of partial illumination between the umbra, or perfect shadow, on all sides, and the full light. Sir I. Newton.

 

Note: The faint shade surrounding the dark central portion of a solar spot is also called the penumbra, and sometimes umbra.

 

3. (Paint. )

 

Defn: The part of a picture where the shade imperceptibly blends with the light.

 

PENUMBRALA

PENUMBRALA Pe *num "brala.

 

Defn: Of or pertaining to a penumbra; resembling a penumbra; partially illuminated.

 

New American Oxford Dictionary

penumbra

pe num bra |peˈnəmbrə pəˈnəmbrə | ▶noun ( pl. penumbrae |-brē, -brī | or penumbras ) the partially shaded outer region of the shadow cast by an opaque object. • Astronomy the shadow cast by the earth or moon over an area experiencing a partial eclipse. • Astronomy the less dark outer part of a sunspot, surrounding the dark core. DERIVATIVES pe num bral |-brəl |adjective ORIGIN mid 17th cent.: modern Latin, from Latin paene ‘almost ’ + umbra ‘shadow. ’

 

Oxford Dictionary

penumbra

penumbra |pɪˈnʌmbrə | ▶noun ( pl. penumbrae |-briː | or penumbras ) 1 the partially shaded outer region of the shadow cast by an opaque object. • Astronomy the shadow cast by the earth or moon over an area experiencing a partial eclipse. • Astronomy the less dark outer part of a sunspot, surrounding the core. 2 a peripheral or indeterminate area or group: an immense penumbra of theory surrounds any observation. DERIVATIVES penumbral adjective ORIGIN mid 17th cent.: modern Latin, from Latin paene ‘almost ’ + umbra ‘shadow ’.

 

Duden Dictionary

Penumbra

Pe n um b ra , Pe num bra Substantiv, feminin Astronomie , die |Pen u mbra |die Penumbra; Genitiv: der Penumbra lateinisch-neulateinisch nicht ganz dunkles Randgebiet eines Sonnenflecks

 

Spanish Dictionary

penumbra

penumbra nombre femenino 1 Situación en que hay poca luz pero no se llega a la oscuridad :la casa está fresca y en penumbra; su rostro se borraba en la penumbra, pero reconocí en ella al novio de la muchacha .2 En un eclipse, sombra parcial que hay entre la parte que está iluminada y la que está completamente oscura .3 formal Estado de lo que es indeterminado o difícil de comprender :el principal defecto de su último ensayo es que algunos conceptos quedan en la penumbra .

 

Sanseido Wisdom Dictionary

penumbra

pen um bra /pənʌ́mbrə /名詞 複 ～e /-briː /, ～s C ｟かたく ｠1 (明暗の間の )半影部分 .2 〘天 〙(月食 日食による )半影 ; (太陽の黒点周辺の )半影 .