(n.) A muscle which surrounds, and by its contraction tends to close, a natural opening; as, the sphincter of the bladder.
SPHINCTER
Meaning of SPHINCTER in English
Webster's English dictionary. Английский словарь Webster. 2012
(n.) A muscle which surrounds, and by its contraction tends to close, a natural opening; as, the sphincter of the bladder.
Webster's English dictionary. Английский словарь Webster. 2012