Adjacent Words

Semicircle definitions

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Webster's 1828 Dictionary

SEM'ICIRCLE, n. [semi and circle.]
1. The half of a circle; the part of a circle comprehended between its diameter and half of its circumference.
2. Any body in the form of a half circle.

WordNet (r) 3.0 (2005)

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

Merriam Webster's

noun Etymology: Latin semicirculus, from semi- + circulus circle Date: 1526 1. a half of a circle 2. an object or arrangement of objects in the form of a half circle • semicircular adjective

Oxford Reference Dictionary

n. 1 half of a circle or of its circumference. 2 a set of objects ranged in, or an object forming, a semicircle. Etymology: L semicirculus (as SEMI-, CIRCLE)

Webster's 1913 Dictionary

Semicircle 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.

Collin's Cobuild Dictionary

see semi-circle

Moby Thesaurus

crescent, crescent moon, fifty percent, fifty-fifty, half, half circle, half-and-half, half-moon, hemicycle, hemisphere, horseshoe, lunula, lunule, mediety, meniscus, moiety, quadrant, scythe, sector, semisphere, sextant, sickle