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3 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 semi·cir·cle /ˈsɛmiˌsɚ/

From: Webster's Revised Unabridged Dictionary (1913)

 Sem·i·cir·cle n.
 1. (a) The half of a circle; the part of a circle bounded by its diameter and half of its circumference. (b) A semicircumference.
 2. A body in the form of half of a circle, or half of a circumference.
 3. An instrument for measuring angles.

From: WordNet (r) 2.0

      n : a plane figure with the shape of half a circle [syn: hemicycle]