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sextant

noun [C]
 
 
/ˈsek.stənt/

Definition

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 aircraftNavigation 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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