sigmoid Meaning, Definition & Usage

  1. adjective curved in two directions (like the letter S)
  2. adjective of or relating to the sigmoid flexure in the large intestine
    sigmoidal.

WordNet

Sig"moid, Sig*moid"al adjective (Also<
  • Sigmoid
  • Sigmoidal
)
Etymology
Gr. sigma + form, likeness: cf. F. sigmoïde.
Definitions
  1. Curved in two directions, like the letter S, or the Greek &sigmat;.

Webster 1913