Sextant
Sextant Sex"tant, n. [L. sextans, -antis, the sixth part of an as, fr. sextus sixth, sex six. See {Six}.] 1. (Math.) The sixth part of a circle. [1913 Webster]

2. An instrument for measuring angular distances between objects, -- used esp. at sea, for ascertaining the latitude and longitude. It is constructed on the same optical principle as Hadley's quadrant, but usually of metal, with a nicer graduation, telescopic sight, and its arc the sixth, and sometimes the third, part of a circle. See {Quadrant}. [1913 Webster]

3. (Astron.) The constellation Sextans. [1913 Webster]

{Box sextant}, a small sextant inclosed in a cylindrical case to make it more portable. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • sextant — [ sɛkstɑ̃ ] n. m. • 1639; lat. sc. sextans (1602), proprt « sixième » ♦ Astron., mar. Instrument composé d un miroir tournant et d un sixième de cercle gradué, permettant de mesurer la distance angulaire d un astre avec l horizon. Faire le point… …   Encyclopédie Universelle

  • sextant — SEXTÁNT, sextanţi, s.m. Instrument optic format dintr un arc gradat egal cu o şesime de cerc, prevăzut cu două oglinzi şi cu o lunetă mică, care se întrebuinţează la măsurarea distanţei unghiulare dintre două puncte şi se foloseşte în astronomie …   Dicționar Român

  • Sextant — Sm (ein Winkelmeßinstrument) per. Wortschatz fach. (18. Jh.) Neoklassische Bildung. Neubildung englischer Physiker zu l. sextāns ( antis) ein Sechstel , zu l. sex sechs . Das Instrument umfaßt einen Sechstelkreis, d.h. 60 Grad.    Ebenso nndl.… …   Etymologisches Wörterbuch der deutschen sprache

  • Sextant — Sextant, 1) Instrument, aus dem sechsten Theil eines Kreises bestehend, welches dazu dient, ohne einen festen unveränderlichen Stand für das Instrument zu haben, wie z.B. auf dem Schiffe, den Winkel zu messen, welchen die nach zwei beliebig… …   Pierer's Universal-Lexikon

  • Sextant — Sextant, s. Spiegel und Prismeninstrumente …   Lexikon der gesamten Technik

  • Sextánt — (lat.), in der Geometrie der sechste Teil eines Kreises, ein Sektor von 60 Graden; in der Astronomie ein Winkelmesser (Spiegel S.), aus einem Kreissektor von 60 Graden, 2 Spiegeln und 1 Fernrohr bestehend, zur Messung der Sternhöhe und Distanzen …   Kleines Konversations-Lexikon

  • Sextant — (der 6. Theil), s. Spiegel. S …   Herders Conversations-Lexikon

  • sextant — instrument for determining latitude, 1620s, from Mod.L. sextans, said to have been coined c.1600 by Danish astronomer Tycho Brahe, from L. sextans a sixth, from sex six (see SIX (Cf. six)). So called because the sextans has a graduated arc equal… …   Etymology dictionary

  • sextant — ► NOUN ▪ an instrument with a graduated arc of 60° and a sighting mechanism, used for measuring the angular distances between objects and especially for taking altitudes in navigation and surveying. ORIGIN originally denoting the sixth part of a… …   English terms dictionary

  • sextant — [seks′tənt] n. [ModL sextans (gen. sextantis), arc of a sixth part of a circle < L, a sixth part < sextus, SIXTH] an instrument used by navigators for measuring the angular distance of the sun, a star, etc. from the horizon, as in finding… …   English World dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”