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semiellipse

American

[sem-ee-i-lips, sem-ahy-] / ˌsɛm i ɪˈlɪps, ˌsɛm aɪ- /

noun

Geometry.

a half ellipse, usually one containing both ends of the major axis.

Other Word Forms

semielliptic adjective
semielliptical adjective

Etymology

Origin of semiellipse

First recorded in 1725–35; semi- + ellipse

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.