Definition of extinct
(Entry 1 of 2)
1a
: no longer burning
b
: no longer active
an extinct volcano
2
: no longer existing
an extinct animal
3a
: gone out of use : superseded
b
: having no qualified claimant
an extinct title
extinct
verb
extincted; extincting; extincts
Definition of extinct (Entry 2 of 2)
Test Your Vocabulary
Odd Habits and Quirks
-
- Which of the following best describes an easily irritated person?

Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Share extinct
Time Traveler for extinct
The first known use of extinct was in the 15th century
See more words from the same century