tapetum lucidum

noun
tapetum lu·​ci·​dum | \ -ˈlü-si-dəm How to pronounce tapetum lucidum (audio) \

Medical Definition of tapetum lucidum

: a layer in the choroid chiefly of nocturnal mammals that reflects light causing the eyes to glow when light strikes them at night and that is made up of several layers of flattened cells covered by a zone of doubly refracting crystals

Comments on tapetum lucidum

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

WORD OF THE DAY

not to be persuaded, moved, or stopped

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Latin Quiz

  • roman forum
  • Which of the following months comes from a Latin word for “ten”?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Citation

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!