Meaning of semicircle

sem•i•cir•cle

Pronunciation: (sem'i-sûr"kul), [key]
— n.
  1. Also calledhalf of a circle; the arc from one end of a diameter to the other.
  2. anything having or arranged in the form of a half of a circle.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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