3 definitions found
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Sphincter \Sphinc"ter\, n. [NL., fr ??? to bind tight.] (Anat.)
A muscle which surrounds, and by its contraction tends to
close a natural opening; as the sphincter of the bladder.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Sphincter \Sphinc"ter\, a. (Anat.)
Of pertaining to or designating, a sphincter; as a
sphincter muscle.
From WordNet r 1.6 [wn]:
sphincter
n : a ring of muscle that contracts to close an opening [syn: {anatomical
sphincter}, {sphincter muscle}]
more about sphincter
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Lake Atitlan, Guatemala
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