Is “Sigmoid” a Scrabble word?
Yes
SIGMOID
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Sigmoid
/ˈsɪɡ.mɔɪd/
noun
1.A function having a graph whose shape is sigmoid..
adjective
1.Curved in two directions, like the letter "S", or the Greek ς (sigma).
2.Semi-circular, like the lunar sigma (similar to English C).
3.Relating to the sigmoid flexure of the large intestine.
Synonyms: S-shaped, sigmoidal