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extinction

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noun ex·tinc·tion \ik-ˈstiŋ(k)-shən\

Simple Definition of extinction

  • : the state or situation that results when something (such as a plant or animal species) has died out completely

Source: Merriam-Webster's Learner's Dictionary

Full Definition of extinction

  1. 1 :  the act of making extinct or causing to be extinguished

  2. 2 :  the condition or fact of being extinct or extinguished; also :  the process of becoming extinct <extinction of a species>

  3. 3 :  the process of eliminating or reducing a conditioned response by not reinforcing it

Examples of extinction in a sentence

  1. the extinction of all life in the region

  2. the extinction of many old traditions

  3. Mass extinctions of prehistoric animals are known to have occurred.



15th Century

First Known Use of extinction

15th century


EXTINCTION Defined for Kids

extinction

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noun ex·tinc·tion \ik-ˈstiŋk-shən\

Definition of extinction for Students

  1. :  the state of being, becoming, or making extinct




Medical Dictionary

extinction

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noun ex·tinc·tion \ik-ˈstiŋ(k)-shən\

Medical Definition of extinction

  1. 1:  the process of becoming extinct <the extinction of a species>; also :  the condition or fact of being extinct

  2. 2:  the process of eliminating or reducing a conditioned response by not reinforcing it





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to lessen in amount, effect, or force

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