Cite
 

Meaning of sphincter

sphinc•ter

Pronunciation: (sfingk'tur), [key]
— n. Anat.
  1. a circular band of voluntary or involuntary muscle that encircles an orifice of the body or one of its hollow organs.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also: