English-Thai Dictionary

azimuth

N ทิศทาง ของ ดวงดาว ที่ วัด ตำแหน่ง บน พื้นโลก  เส้น วาง ราบ 

 

Webster's 1828 Dictionary

AZIMUTH

n. 1. In astronomy, an arch of the horizon intercepted between the meridian of the place, and the azimuth or vertical circle, passing through the center of the object.
2. Magnetical azimuth, an arch of the horizon, intercepted between the azimuth or vertical circle, passing through the center of any heavenly body, and the magnetic meridian. This is found by observing the object with an azimuth compass.
3. Azimuth compass, an instrument for finding either the magnetic azimuth or amplitude of an heavenly object.
4. Azimuth dial, a dial whose stile or gnomon is at right angles to the plane of the horizon.
5. Azimuths or vertical circles, are great circles intersecting each other in the zenith and nadir, and cutting the horizon at right angles.
On charts, these azimuths are represented by rhumbs, and on the globe, by the quadrant of altitude, when screwed in the zenith.

 

Webster's 1913 Dictionary

AZIMUTH

Az "i *muth, n. Etym: [OE. azimut, F. azimut, fr. Ar. as-sum, pl. of as-samt a way, or perh., a point of the horizon and a circle extending to it from the zenith, as being the Arabic article: cf. It. azzimutto, Pg. azimuth, and Ar. samt-al-ra's the vertex of the heaven. Cf. Zenith. ] (Astron. & Geodesy )(a ) The quadrant of an azimuth circle. (b ) An arc of the horizon intercepted between the meridian of the place and a vertical circle passing through the center of any object; as, the azimuth of a star; the azimuth or bearing of a line surveying.

 

Note: In trigonometrical surveying, it is customary to reckon the azimuth of a line from the south point of the horizon around by the west from º to 36 º. Azimuth circle, or Vertical circle, one of the great circles of the sphere intersecting each other in the zenith and nadir, and cutting the horizon at right angles. Hutton. -- Azimuth compass, a compass resembling the mariner's compass, but having the card divided into degrees instead of rhumbs, and having vertical sights; used for taking the magnetic azimuth of a heavenly body, in order to find, by comparison with the true azimuth, the variation of the needle. -- Azimuth dial, a dial whose stile or gnomon is at right angles to the plane of the horizon. Hutton. -- Magnetic azimuth, an arc of the horizon, intercepted between the vertical circle passing through any object and the magnetic meridian. This is found by observing the object with an azimuth compass.

 

AZIMUTHAL

AZIMUTHAL Az "i *muth `al, a.

 

Defn: Of or pertaining to the azimuth; in a horizontal circle. Azimuthal error of a transit instrument, its deviation in azimuth from the plane of the meridian.

 

New American Oxford Dictionary

azimuth

az i muth |ˈazəməTH ˈæzəməθ | ▶noun the direction of a celestial object from the observer, expressed as the angular distance from the north or south point of the horizon to the point at which a vertical circle passing through the object intersects the horizon. • the horizontal angle or direction of a compass bearing. DERIVATIVES az i muth al |ˌazəˈməTHəl |adjective ORIGIN late Middle English (denoting the arc of a celestial circle from the zenith to the horizon ): from Old French azimut, from Arabic as-samt, from al ‘the ’ + samt ‘way, direction. ’

 

azimuthal projection

az i muth al pro jec tion |ˌazəˈməTHəl ˌæzəˌməθəlprəˈɛkʃən | ▶noun a map projection in which a region of the earth is projected onto a plane tangential to the surface, typically at a pole or the equator.

 

Oxford Dictionary

azimuth

azimuth |ˈazɪməθ | ▶noun the direction of a celestial object from the observer, expressed as the angular distance from the north or south point of the horizon to the point at which a vertical circle passing through the object intersects the horizon. • the horizontal angle or direction of a compass bearing. DERIVATIVES azimuthal |-ˈmjuːθ (ə )l |adjective ORIGIN late Middle English (denoting the arc of a celestial circle from the zenith to the horizon ): from Old French azimut, from Arabic as-samt, from al ‘the ’ + samt ‘way, direction ’.

 

azimuthal projection

azimuthal projection |ˌazɪˈmjuːθ (ə )l | ▶noun a map projection in which a region of the earth is projected on to a plane tangential to the surface, usually at a pole or the equator.

 

Sanseido Wisdom Dictionary

azimuth

az i muth /ǽzɪməθ /名詞 C 〘天 測量 〙方位 (角 ).