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

Medical Dictionary

mica

play
noun mi·ca \ˈmī-kə\

Medical Definition of mica

  1. :  any of various colored or transparent mineral silicates crystallizing in monoclinic forms that readily separate into very thin leaves

micaceous \mī-ˈkā-shəs\play adjective



Learn More about mica


Seen and Heard

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

WORD OF THE DAY

the Celtic May Day festival

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image567572573

Which of these is a synonym of unctuous?

angry oily prompt maudlin
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ