- (math) A function having a graph whose shape is sigmoid. See w:Sigmoid, Wikipedia, http://mathworld.wolfram.com/SigmoidFunction.html Mathworld.
Etymology: From Ancient Greek (polytonic, ) (sigmoeidÄs) < (polytonic, ) or (polytonic, á) (sigma) "sigma" + (polytonic, á) (eidos) "form, likeness". Compare with French sigmoíde.
- (geometry) Curved in two directions, like the letter "S", or the Greek Ï‚ (sigma).
- (context, geometry, archaic) semi-circular, Semi-circular, like the lunar sigma (similar to English C).
- (anatomy) Relating to the sigmoid flexure of the large intestine.
Supplemental Details:Sponsor an extended definition for sigmoid for as little as $10 per month. Click here to contact us.