1. sphincter

noun. a ring of muscle that contracts to close an opening.


  • pyloric valve
  • musculus sphincter pylori
  • musculus sphincter urethrae
  • sphincter muscle
  • bladder sphincter
  • physiological sphincter
  • pyloric sphincter
  • musculus sphincter ductus choledochi
  • musculus sphincter ductus pancreatici
  • urethral sphincter
  • musculus
  • anatomical sphincter
  • anal sphincter
  • pupillary sphincter
  • muscle
  • musculus sphincter vesicae
  • sphincter ani
  • musculus sphincter pupillae


  • sphincter (Latin)
  • σφιγκτήρ (Ancient Greek (to 1453))

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Example sentences of the word cardiac-sphincter

1. Noun Phrase
You also experience loosening of the cardiac sphincter, which normally separates the stomach from the esophagus.

2. Noun Phrase
Your cardiac sphincter, which normally keeps stomach acid in the stomach, becomes loose during pregnancy, which causes frequent heartburn in many pregnant women.

3. Noun Phrase
When you're pregnant, you tend to lose tone in the cardiac sphincter, which separates the stomach from the esophagus.