Merriam-Webster Logo
SINCE 1828
Menu
×

An Encyclopædia Britannica Company

CCU

abbreviation

Definition of CCU

  1. 1 cardiac care unit

  2. 2 coronary care unit

  3. 3 critical care unit

Explore M-W

alt-59245a1009b19
Trending: Brennan: Concerns of Russian Efforts to 'suborn'
alt-5925b73b3a62e
To 'Author' is a Verb
young-people-being-filmed-during-a-spelling-bee
Winning Words from Scripps Spelling Bee Quiz
decimate-video
Is it wrong to use 'decimate' to mean 'destroy'?

Medical Dictionary

CCU

abbreviation

Medical Definition of CCU

  1. 1cardiac care unit

  2. 2coronary care unit

  3. 3critical care unit

Seen and Heard

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

show hide

Love words? Need even more definitions?

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

WORD OF THE DAY

torpedo

play

a weapon for destroying ships

Get Word of the Day daily email!

TRENDING NOW

  1. suborn "to induce secretly to do an unlawful thing"

  2. nutjob 'a mentally unbalanced person'

  3. collusion 'Secret cooperation for an illegal or dishonest purpose'

  4. counsel Is it 'council' or 'counsel'?

  5. witch hunt Lookups spiked after Trump used the word in a tweet

SEE ALL

BROWSE DICTIONARY

CCS
CCU
ccw
cd

WORD GAMES

Take a 3-minute break and test your skills!

  • young-people-being-filmed-during-a-spelling-bee
  • Which is the correct spelling of the winning word from 1988?
True or False

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

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!

Words at Play

alt-5925b73b3a62e
To 'Author' is a Verb

Beyond the mere act of writing

alt-592708149cf54
Don't Catch 'Flack' for Using 'Flak'

How a word for antiaircraft guns came to refer to PR pro

image1694077559
Plural Words With Multiple Spellings

Multiple spellings for "multiple" words.

alt-5924736949123
Does This Common Computer Term Actually Reference Shoes?

These reboots were made for walking

Ask the Editors

decimate-video
Is it wrong to use 'decimate' to mean 'destroy'?

Language changes

serial-comma
The Serial Comma

Why don't they call it the Merriam-Webster comma?

video-irregardless-grammar-peeve-blend-of-the-synonyms-irrespective-and-regardless
Irregardless

It is in fact a real word (but that doesn't mean you should use it).

video-moose-goose-weird-plurals
Weird Plurals

One goose, two geese. One moose, two... moose. What's up with that?

Word Games

young-people-being-filmed-during-a-spelling-bee
Winning Words from Scripps Spelling Bee Quiz

Can you best past winners of the Spelling Bee?

Take the quiz
peter-bruegel-tower-of-babel-painting
Where in the World? A Quiz

Do you know what languages these words come from?

Take the quiz
True or False
True or False?

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

Take the quiz
SCRABBLE® Sprint
SCRABBLE® Sprint

SCRABBLE® fans, sharpen your skills!

Play the game