sextant

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. a unit of angular distance equal to 60 degrees
• Hypernyms:
angular unit
• Part Holonyms:
circumference
• Part Meronyms:
degree, arcdegree
2. a measuring instrument for measuring the angular distance between celestial objects;
resembles an octant
• Hypernyms:
measuring instrument, measuring system, measuring device
• Hyponyms:
astrolabe
• Part Meronyms:
limb