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extinct

 [ik-stingkt]   Example Sentences Origin

ex·tinct

   [ik-stingkt]
adjective
1.
no longer in existence; that has ended or died out: an extinct species of fish.
2.
no longer in use; obsolete: an extinct custom.
3.
extinguished; quenched; not burning.
4.
having ceased eruption; no longer active: an extinct volcano.
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Origin:
1400–50; late Middle English < Latin ex(s)tinctus put out, quenched, past participle of ex(s)tinguere to extinguish

Related forms
non·ex·tinct, adjective
un·ex·tinct, adjective

Can be confused: extinct, rare, scarce.

Synonyms
1. defunct, gone, vanished. See dead. 2. archaic. 3. out.

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Extinct is a TOEFL word you need to know.
So is perplexed. Does it mean:
to cause faster or greater activity
bewildered, puzzled, or confused
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Example Sentences
  • In America, 53 languages have become extinct since 1950, more than in any other country.
  • For nearly two centuries, people have struggled to imagine what the great extinct dinosaurs looked like.
  • Fully prepared to overthrow everything on the planet in 1968, they were nearly all extinct by 1970.
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Collins
World English Dictionary
extinct (ɪkˈstɪŋkt)
 
—adj
1.  (of an animal or plant species) having no living representative; having died out
2.  quenched or extinguished
3.  (of a volcano) no longer liable to erupt; inactive
4.  void or obsolete: an extinct political office
 
[C15: from Latin exstinctus quenched, from exstinguere to extinguish]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

extinct
early 15c., from L. extinctus, pp. of extinguere (see extinguish). Originally of fires; the sense of the condition of "dying out" of a family or a hereditary title, 1580s.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
extinct   (ĭk-stĭngkt')  Pronunciation Key 

  1. 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.

  2. No longer active or burning, as an extinct volcano.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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