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English definition of “sextant”

sextant

noun [C]     /ˈsek.stənt/
a device used on a ship or aircraft for measuring angles , such as those between stars or that between the sun and the Earth , in order to discover the exact position of the ship or aircraft Navigation and shipwrecksTravelling by aircraftAviationMovement through the air
(Definition of sextant noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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