| 1. |
(noun) an instrument for measuring altitude of heavenly bodies |
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Related Words: measuring instrument, measuring system |
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| 2. |
(noun) the area enclosed by two perpendicular radii of a circle |
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Related Words: area, country |
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| 3. |
(noun) any of the four areas into which a plane is divided by two orthogonal coordinate axes |
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Related Words: area, country |
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| 4. |
(noun) a quarter of the circumference of a circle |
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Synonyms: quarter-circle |
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Related Words: line |
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| 5. |
(noun) a quarter of the circumference of a circle |
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Synonyms: right angle |
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Related Words: angular unit |
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