sphincternoun [ C ]
uk/ˈsfɪŋk.tər/us/ˈsfɪŋk.tɚ/specializeda muscle that surrounds an opening in the body and can tighten to close it:
the anal sphincter
a sphincter muscle
Thesaurus: synonyms and related words
Substances & structures in the body
- abductor
- accessorius
- adductor
- agonist
- amyloid
- atheroma
- caecum
- grey matter
- gyrus
- hallucis
- hilum
- hilus
- lymph vessel
- peptic
- periosteum
- peritoneal
- peritoneum
- phosphatase
- vitreous humour
- xiphoid
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