- no longer in existence; that has ended or died out: an extinct species of fish.
- no longer in use; obsolete: an extinct custom.
- extinguished; quenched; not burning.
- having ceased eruption; no longer active: an extinct volcano.
Origin of extinct
1400–50; late Middle English < Latin ex(s)tinctus put out, quenched, past participle of ex(s)tinguere to extinguish
SynonymsSee more synonyms for extinct on Thesaurus.com
1. defunct, gone, vanished. 2. archaic. 3. out.
1. See dead.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for extinct
So while the divas are fewer in number in 2014, they are far from extinct.Mariah Carey Is the Last of the Traditional Divas
May 29, 2014
Wild tigers are rare in China, with some varieties now believed to be extinct.Why Do Chinese Oligarchs Secretly Love Illegal Tiger Meat?
March 31, 2014
If Black rhino were to become another creature on the growing list of extinct species, it would be a loss for us all.Borana Joins the Fight to Save Kenya’s Rhinos…and Wants You to Help Too
February 18, 2014
Bringing Them Back to Life Carl Zimmer, National Geographic The revival of an extinct species is no longer a fantasy.The Week’s Best Longreads for March 23, 2013
March 23, 2013
And I take liberal Zionism seriously enough to defend it against those who wish to make it extinct.Why Liberal Zionists Won't Join BDS
February 12, 2013
An animal (now extinct) which was half horse and half griffin.
An extinct pachyderm that flourished when the Pterodactyl was in fashion.
Where there is desire, there must be discontent: if we are satisfied with all things, desire is extinct.Alice, or The Mysteries, Complete
Who could be sure that the old megalosauri, and megalichthys were extinct?The Cruise of the Dry Dock
T. S. Stribling
He looks exhausted, care-worn, spiritless, (p. 242) extinct.Diary from November 12, 1862, to October 18, 1863
- (of an animal or plant species) having no living representative; having died out
- quenched or extinguished
- (of a volcano) no longer liable to erupt; inactive
- void or obsoletean extinct political office
C15: from Latin exstinctus quenched, from exstinguere to extinguish
Word Origin and History for extinct
Online Etymology Dictionary, © 2010 Douglas Harper
- Having no living members. Species become extinct for many reasons, including climate change, disease, destruction of habitat, local or worldwide natural disasters, and development into new species (speciation). The great majority of species that have ever lived-probably more than 99 percent-are now extinct.
- No longer active or burning, as an extinct volcano.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.