octant

octant
octant (n.) instrument for making angular measurements in navigation or astronomy, 1731, from L.L. octans "the eighth part," from octo "eight" (see OCTA- (Cf. octa-)) on analogy of QUADRANT (Cf. quadrant). In geometry, octant meant "the eighth part of a circle."

Etymology dictionary. 2014.

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  • octant — OCTÁNT, octante, s.n. 1. Instrument de navigaţie maritimă şi aeriană sau care serveşte la măsurarea înălţimii aştrilor, a distanţelor lor unghiulare etc. 2. A opta parte din circumferinţa unui cerc sau dintr o suprafaţă circulară. ♦ Fiecare… …   Dicționar Român

  • octant — [ ɔktɑ̃ ] n. m. • 1619; lat. octans « huitième partie » 1 ♦ Géom. Arc de 45° (huitième de cercle). 2 ♦ Mar. anc. Instrument du genre du sextant, mais dont le limbe n est que de 45°. ● octant nom masculin (latin octans, antis) Huitième partie du… …   Encyclopédie Universelle

  • Octant — Oc tant, n. [L. octans, antis. fr. octo eight. See {Octave}.] 1. (Geom.) The eighth part of a circle; an arc of 45 degrees. [1913 Webster] 2. (Astron. & Astrol.) The position or aspect of a heavenly body, as the moon or a planet, when half way… …   The Collaborative International Dictionary of English

  • Octant — (v. lat.), 1) (Spiegeloctant, Sphärischer O.), ein astronomisches, auch zur See gebräuchliches Instrument, der achte Theil eines Kreises, mit welchem man durch doppelte Reflexion Winkel messen kann; meistens wird es zum Messen der Sonnenhöhe… …   Pierer's Universal-Lexikon

  • octant — [äk′tənt] n. [LL octans, eighth part < L octo,EIGHT] 1. an eighth of a circle; 45° angle or arc 2. an instrument like the sextant, for measuring angles 3. Astron. the position of one celestial body when it is 45° distant from another 4. Math.… …   English World dictionary

  • Octant — For other uses, see Octant (disambiguation). Three axial planes (x=0, y=0, z=0) divide space into eight equal octant domains, each with a coordinate signs from ( , , ) to (+,+,+). An octant is one of eight divisions. Contents …   Wikipedia

  • Octant — Pour les articles homonymes, voir Octant (homonymie). Octant Vue de la constellation …   Wikipédia en Français

  • octant — oktantas statusas T sritis Standartizacija ir metrologija apibrėžtis Kampinio atstumo tarp kosminių kūnų matuoklis. atitikmenys: angl. octant rus. октант, m pranc. octant, m ryšiai: susijęs terminas – kvadrantas susijęs terminas – kvadrantas… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • octant — oktantas statusas T sritis Standartizacija ir metrologija apibrėžtis Kampų matuoklis. atitikmenys: angl. octant rus. октант, m pranc. octant, m ryšiai: susijęs terminas – kvadrantas susijęs terminas – kvadrantas susijęs terminas – kvadrantas… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • octant — oktantas statusas T sritis Standartizacija ir metrologija apibrėžtis Viena iš aštuonių sričių, į kurias dalijama erdvė. atitikmenys: angl. octant rus. октант, m pranc. octant, m ryšiai: susijęs terminas – kvadrantas susijęs terminas – kvadrantas… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

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