sigmoid

[ sig-moid ]

/ ˈsɪg mɔɪd /

adjective

shaped like the letter C.

shaped like the letter S.

of, relating to, or situated near the sigmoid flexure of the large intestine.

Words nearby sigmoid

sigma baryon, sigma factor, sigma particle, sigmate, sigmatism, sigmoid, sigmoid artery, sigmoid colon, sigmoid flexure, sigmoid sinus, sigmoid vein

Sometimes sig·moi·dal [sig-moi-dl] /sɪgˈmɔɪ dl/.

Origin of sigmoid

First recorded in 1660–70, sigmoid is from the Greek word sigmoeidḗs shaped like a sigma. See sigma, -oid

OTHER WORDS FROM sigmoid

sig·moi·dal·ly, adverbpost·sig·moid, adjectivepost·sig·moi·dal, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for sigmoidal

A sigmoidal fold, showing a bed xx in an overfold with arch (a), trough (t) and common limb c.
The Principles of Stratigraphical Geology|J. E. Marr

British Dictionary definitions for sigmoidal

sigmoid

/ (ˈsɪɡmɔɪd) /

adjective Also: sigmoidal

shaped like the letter S

of or relating to the sigmoid colon of the large intestine

noun

See sigmoid colon

Word Origin for sigmoid

C17: from Greek sigmoeidēs sigma-shaped

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

Medical definitions for sigmoidal

sigmoid

[ sĭg′moid′ ]

adj.

Having the shape of the letter S.

Of or relating to the sigmoid flexure of the colon.