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sigmoid a. S字形的, S状弯曲部的, C字形的
n. 反曲 S字形的, S状弯曲部的, C字形的反曲 sigmoid adj 1: curved in two directions ( like the letter S) 2: of or relating to the sigmoid flexure in the large intestine [ synonym: { sigmoid}, { sigmoidal}] 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] 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
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