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Pronunciation: sfingk′tĕr
Definition: A muscle that encircles a duct, tube, or orifice in such a way that its contraction constricts the lumen or orifice.
Synonym(s): musculus sphincterTA, sphincter muscleTA
[G. sphinktēr, a band or lace]
Examples: glitazone, GI cocktail, etc.
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