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Definition of Demicircle
1. n. An instrument for measuring angles, in surveying, etc. It resembles a protractor, but has an alidade, sights, and a compass.
Definition of Demicircle
1. Noun. A semicircle. ¹
2. Noun. An instrument for measuring angles in surveying etc., resembling a protractor with an alidade, sights, and compass. ¹
¹ Source: wiktionary.com