sphincter pupillae

noun
sphincter pu·​pil·​lae | \ -pyü-ˈpil-ē How to pronounce sphincter pupillae (audio) \

Medical Definition of sphincter pupillae

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

Comments on sphincter pupillae

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

recurring in steady succession

Get Word of the Day daily email!

Test Your Vocabulary

Musical Words Quiz

  • gramophone
  • Which word describes a musical performance marked by the absence of instrumental accompaniment?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Bee Cubed

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!