[ 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.

Origin of semiellipse

First recorded in 1725–35; semi- + ellipse

Related forms

sem·i·el·lip·tic [sem-ee-i-lip-tik, sem-ahy-] /ˌsɛm i ɪˈlɪp tɪk, ˌsɛm aɪ-/, sem·i·el·lip·ti·cal, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for semielliptical

  • The carriage when traveling is supported on semielliptical springs, as is also the carriage limber.

British Dictionary definitions for semielliptical


/ (ˌsɛmɪɪˈlɪptɪkəl) /


shaped like one half of an ellipse, esp one divided along the major axis
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012