Sigmoidal is valid Scrabble Word

Is sigmoidal a scrabble word?
Official Scrabble Players Dictionary YES
Official Tournament and Club Word List YES
Collins Scrabble Words YES
Is sigmoidal valid Words with Friends?
Words with Friends YES

9 letters word
13 points in Scrabble
16 points in WWF

Definitions for SIGMOIDAL in dictionary:

ADJECTIVE:

S-shaped, also SIGMATE, SIGMATED, SIGMOID
Curved in two directions, like the letter S, or the Greek /.
of or relating to the sigmoid flexure in the large intestine
of, relating to, or resembling the shape of a sidmoid; shaped like the letter S.
of, or relating to the sigmoid colon.

OTHER DEFINITIONS:

curved like the letter C; curved in two directions like the letter S
variant of sigmoid

Words related to SIGMOIDAL

sigmoid11 sigmoidally18

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