(definition) by Webster 1913 Wed Dec 22 1999 at 3:00:45

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.

© Webster 1913.

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