Bible Dictionaries
Semicircle

Webster's Dictionary

(1):

(n.) The half of a circle; the part of a circle bounded by its diameter and half of its circumference.

(2):

(n.) A semicircumference.

(3):

(n.) A body in the form of half of a circle, or half of a circumference.

(4):

(n.) An instrument for measuring angles.

Bibliography Information
Webster, Noah. Entry for 'Semicircle'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​s/semicircle.html. 1828.