refractivity

noun
re·​frac·​tiv·​i·​ty | \ ˌrē-ˌfrak-ˈtiv-ət-ē, ri- How to pronounce refractivity (audio) \
plural refractivities

Medical Definition of refractivity

: the ability of a substance to refract light expressed quantitatively specifically : the index of refraction minus one

Comments on refractivity

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

WORD OF THE DAY

marked by turns or indirection

Get Word of the Day daily email!

Test Your Vocabulary

Summer 2019 Words of the Day Quiz

  • a-bowl-of-peach-sorbet-with-cut-peaches-next-to-it
  • Which is a synonym of desideratum?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
SCRABBLE® Sprint

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!