Keep scrolling for more
“Blastocyte.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/blastocyte. Accessed 29 Sep. 2022.
Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!
See Definitions and Examples »
Get Word of the Day daily email!
Commonly Confused Words Quiz
Test your knowledge - and maybe learn something along the way.
A daily challenge for crossword fanatics.
As illustrated by some very smart pups
Bikini, bourbon, and badminton were places first
Do you take pride in Pride?
Look up any year to find out
How to use a word that (literally) drives some pe...
We're intent on clearing it up
Editor Emily Brewster clarifies the difference.
"The public is a hot mess"
Level up your vocabulary with these newly added w...
Take the quiz
Test your visual vocabulary!
Test your knowledge - and maybe learn something a...
Can you outdo past winners of the National Spelli...