sextant
n. கப்பலோட்டியின் கோணமானி, நிலப்பரப்பாய்வுக் கோணளவுகருவி, வட்டத்தின் ஆறில் ஒரு பகுதி.
Sex"tant, n. Etym: [L. sextans, -antis, the sixth part of an as, fr. sextus sixth, sex six. See Six.] 1. (Math.) Defn: The sixth part of a circle. 2. An instrument for measuring angular distances between objects, -- used esp. at sea, for ascertaining the latitude and longitude. It is constructed on the same optical principle as Hadley's quadrant, but usually of metal, with a nicer graduation, telescopic sight, and its arc the sixth, and sometimes the third, part of a circle. See Quadrant. 3. (Astron.) Defn: The constellation Sextans. Box sextant, a small sextant inclosed in a cylindrical case to make it more portable.