Definition of extremophile
: an organism that lives under extreme environmental conditions (as in a hot spring or ice cap)
Test Your Vocabulary
Commonly Confused Words Quiz
-
- I went to the ______ store to buy a birthday card.

Test your visual vocabulary with our 10-question challenge!
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Share extremophile
Time Traveler for extremophile
The first known use of extremophile was in 1989
See more words from the same year