sigmoidal : Idioms & Phrases

Index

Sigmoid flexure

  • noun the s-shaped curve between the descending colon and the rectum
    sigmoid colon.
WordNet
  • (Anat.), the last curve of the colon before it terminates in the rectum. See Illust. under Digestive.
Webster 1913

Sigmoid valves

  • . (Anat.) See Semilunar valves, under Semilunar.
Webster 1913