Sigmoid

3 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Sigmoid \Sig"moid\, Sigmoidal \Sig*moid"al\, a. [Gr. ???; ???
     sigma + e'i^dos form, likeness: cf. F. sigmo["i]de.]
     Curved in two directions, like the letter S, or the Greek
     [sigmat].
     [1913 Webster]
  


     {Sigmoid flexure} (Anat.), the last curve of the colon before
        it terminates in the rectum. See Illust. under
        {Digestive}.
  
     {Sigmoid valves}. (Anat.) See {Semilunar valves}, under
        {Semilunar}.
        [1913 Webster]

From WordNet (r) 2.0 [wn]:

  sigmoid
       adj 1: curved in two directions (like the letter S)
       2: of or relating to the sigmoid flexure in the large intestine
          [syn: {sigmoidal}]

From Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]:

  59 Moby Thesaurus words for "sigmoid":
     Cynthian, S-shaped, ambagious, anfractuous, bicorn, circuitous,
     circumlocutory, convolutional, corniform, crescent,
     crescent-shaped, crescentic, crescentiform, crescentlike, falcate,
     falciform, flexuose, flexuous, horn-shaped, horned, involute,
     involuted, involutional, labyrinthine, lunar, lunate, luniform,
     lunular, mazy, meandering, meandrous, menisciform, meniscoid,
     moon-shaped, moonlike, rivose, rivulose, roundabout, ruffled,
     semicircular, semilunar, serpentine, sickle-like, sickle-shaped,
     sinuate, sinuose, sinuous, snaky, torsional, tortile, tortuous,
     turning, twisting, twisty, two-horned, whorled, winding,
     wreathlike, wreathy