Definition of extinct
- an extinct volcano
- an extinct animal
- an extinct title
Many of these old traditions have since become extinct.
a few overgrown ruins are all that remain of that once mighty but now extinct civilization
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'extinct.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use: 15th centurySee Words from the same year
What made you want to look up extinct? Please tell us where you read or heard it (including the quote, if possible).
Confusing Words—A Quiz