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Sextant
A navigation instrument used for measuring angles, primarily altitudes of celestial bodies. Originally, the sextant had an arc of 60°, or one-sixth of a circle, from which the instrument derived its name. Because of the double-reflecting principle used, such an instrument could measure angles as large as 120°.
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- Part of Speech: noun
- Synonym(s):
- Blossary:
- Industry/Domain: Science
- Category: General science
- Company: McGraw-Hill
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