✨📕 The NEWThe NEW Collegiate Dictionary, 12th Edition Over 5,000 words added — Buy Now! Collegiate Dictionary — Buy Now!

Medical Dictionary

Search medical terms and abbreviations with the most up-to-date and comprehensive medical dictionary from the reference experts at Merriam-Webster. Master today's medical vocabulary. Become an informed health-care consumer!

Browse the Medical Dictionary

Featured Game

How Strong Is Your Vocabulary?

Find the Best Synonym

Test your vocabulary with our 10-question quiz!

Play Now

Your score

Enable cookies for this site and we’ll track your scores!

Videos

merriam-webster word icons werid al yankovic weird play
"Weird Al" Yankovic & 'Weird'
merriam-webster word icons werid al yankovic weird play
"Weird Al" Yankovic & 'Weird'
merriam-webster word icons oscar the grouch scram play
Oscar the Grouch & 'Scram'
merriam-webster word icons bryan cranston pollyannaish play
Bryan Cranston & 'Pollyannaish'
merriam-webster whoopi goldberg egot play
Whoopi Goldberg & 'EGOT'
See All Videos

Word of the Day

Listen to the pronunciation of bravado

See Definitions and Examples »

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
The Missing Letter A daily crossword with a twist
baby chick with a brown egg
Which Came First? "Jeggings" or "mom jeans"? "Chillax" or "dumpster...
See All