Origin of sigmoid
Related formssig·moi·dal·ly, adverbpost·sig·moid, adjectivepost·sig·moi·dal, adjective
Examples from the Web for sigmoid
A low shrubby Acacia with sigmoid phyllodia was frequent on the hills.Journal of an Overland Expedition in Australia|Ludwig Leichhardt
In volvulus involving the sigmoid flexure, when injury to the bowel is great, the symptoms are acute in the extreme.
Its most common site is the sigmoid flexure, and next in point of frequency the ccum.
Valve lanceolate, sigmoid; axial area very narrow, central area small; stri punctate, in transverse and oblique lines.The Diatomaceae of Philadelphia and Vicinity|Charles Sumner Boyer
The transverse furrow is very oblique, and its two extremities are united by a sigmoid longitudinal furrow.Marine Protozoa from Woods Hole|Gary N. Calkins