plural of sigmoidal

The condition of being sigmoid

(anatomy) The S-shaped section of the large intestine between the descending colon and the rectum.

plural of sigmoid colon

sigmoid colon

plural of sigmoid flexure

plural of sigmoid function

(mathematical analysis, statistics) Any of various real functions whose graph resembles an elongated letter "S"; specifically, the logistic function y=(eˣ)/(eˣ+1)=1/(1+e⁻ˣ).

(anatomy) A sinus on each side of the brain that is a continuation of the transverse sinus on the same side, follows an S-shaped course to the jugular foramen, and empties into the internal jugular vein.