I. ˈsigˌmȯid adjective
also sig·moi·dal (ˈ)sig|mȯid ə l
Etymology: sigmoid from Greek sigmoeidēs, from sigma + -oeidēs -oid; sigmoidal from Greek sigmoeidēs + English -al
1.
a. : curved like the letter C
b. : curved in two directions like the letter S
2. : relating to the sigmoid flexure of the intestine
the sigmoid artery branches from the inferior mesenteric
• sig·moi·dal·ly - ə lē adverb
II. noun
( -s )
: a sigmoid bodily part ; especially : sigmoid flexure