sigmoid

Definition of Sigmoid in English :

1. sigmoid

curved in two directions (like the letter S)

2. sigmoid, sigmoidal

of or relating to the sigmoid flexure in the large intestine

WordNet Lexical Database for English. Princeton University. 2010.

Sigmoid

adjective also: sigmoidal

1.

shaped like the letter S

2.

of or relating to the sigmoid colon of the large intestine

noun

3. sigmoid colon

adjective

1.

a.

having a double curve like the letter S

b.

curved like the letter C (uncial form of sigma)

2.

of the sigmoid flexure of the colon

adj.

1. Having the shape of the letter S.

2. Of or relating to the sigmoid colon.