Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

Medical Dictionary

sphincter pupillae

play
noun sphincter pu·pil·lae \-pyü-ˈpil-ē\

Medical Definition of sphincter pupillae

  1. :  a broad flat band of smooth muscle in the iris that surrounds the pupil of the eye




Seen and Heard

What made you want to look up sphincter pupillae? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

marked by grandiloquent style

Get Word of the Day daily email!