Definitions
sigmoid Tweet Definition of sigmoid Like Definition of sigmoid on Facebook
noun 
  1. (math) A function having a graph whose shape is sigmoid. See w:Sigmoid, Wikipedia, http://mathworld.wolfram.com/SigmoidFunction.html Mathworld.
adjective 
  1. (geometry) Curved in two directions, like the letter "S", or the Greek Ï (sigma).
  2. (context, geometry, archaic) semi-circular, Semi-circular, like the lunar sigma (similar to English C).
  3. (anatomy) Relating to the sigmoid flexure of the large intestine.
Etymology: From Ancient Greek (polytonic, ) (sigmoeidÄs) < (polytonic, ) or (polytonic, á) (sigma) "sigma" + (polytonic, á) (eidos) "form, likeness". Compare with French sigmoíde.


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