bubble sextant

noun

Definition of bubble sextant

: a sextant used especially in aerial navigation in which the image of the heavenly body being observed is brought to the edge of a bubble instead of to the sea horizon, the bubble appearing in its proper position in the field of view only when the sextant is held so that its zero plane is the observer's horizontal plane

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Dictionary Entries Near bubble sextant

bubbler

bubble sextant

bubble shell

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Cite this Entry

“Bubble sextant.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bubble%20sextant. Accessed 23 Sep. 2021.

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