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

Medical Dictionary

break down

play
verb \(ˈ)brāk-ˈdau̇n\

Medical Definition of break down

  1. :  to separate (as a chemical compound) into simpler substances :  decompose

  2. 1

  3. intransitive verb

  4. a:  to stop functioning because of breakage or wearb:  to fail in strength or vitalityc:  to succumb to mental or emotional stress

  5. 2of horses :  to severely injure the supporting ligament or bones of the fetlock joint

  6. 3:  to undergo decomposition





Seen and Heard

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

WORD OF THE DAY

to defraud especially of money

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 maudlin prompt oily
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