Longman Dictionary of Contemporary English - sextant
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Sextant
sextant
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1.
(sextants) A sextant is an instrument used for measuring angles, for example between the sun and the horizon, so that the position of a ship or aeroplane can be calculated. N-COUNT ...Collins COBUILD Advanced Learner's English Dictionary
2.
noun Etymology: New Latin ~-, sextans sixth part of a circle, from Latin, sixth part, from sextus sixth Date: 1628 an instrument for measuring angular distances used especially in navigation to observe altitudes of celestial bodies (as in ascertaining latitude and longitude) ...Merriam-Webster Collegiate Dictionary
3.
n. an instrument with a graduated arc of 60(0) used in navigation and surveying for measuring the angular distance of objects by means of mirrors. Etymology: L sextans -ntis sixth part f. sextus sixth ...Толковый словарь английского языка Oxford English Reference
4.
секстан - artificial horizon sextant - box sextant - bubble sextant - double sextant - electronic digital sextant - gyro sextant - hand sextant - hydrographic sextant - navigational sextant - night sextant - optoelectronic sextant - pendulum sextant - periscope sextant - radiometric sextant - radio sextant - radiooptical sextant - sounding sextant ...Большой Англо-русский Русско-английский политехнический словарь
Англо-русский Русско-английски словарь по телекоммуникациям
Англо-русский Русско-английский научно-технический словарь
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Англо-русский словарь
9.
- 1628, from Mod.L. sextans, coined c.1600 by Dan. astronomer Tycho Brahe, from L. sextans "a sixth," from sex "six." So called because the sextans has a graduated arc equal to a sixth part of a circle. ...Английский Этимологический словарь
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