semicircle: Meaning and Definition of
sem•i•cir•cle
Pronunciation: (sem'i-sûr"kul), [key]
— n.
- Also calledhalf of a circle; the arc from one end of a diameter to the other.
- 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.