extinction
[ ik-stingk-shuhn ]
/ ɪkˈstɪŋk ʃən /
noun
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Origin of extinction
OTHER WORDS FROM extinction
non·ex·tinc·tion, nounpre·ex·tinc·tion, nounself-ex·tinc·tion, nounWords nearby extinction
exterofective, exterritorial, extima, extinct, extinct in the wild, extinction, extinctive, extine, extinguish, extinguishant, extinguisher
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
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British Dictionary definitions for extinction
extinction
/ (ɪkˈstɪŋkʃən) /
noun
the act of making extinct or the state of being extinct
the act of extinguishing or the state of being extinguished
complete destruction; annihilation
physics reduction of the intensity of radiation as a result of absorption or scattering by matter
astronomy the dimming of light from a celestial body as it passes through an absorbing or scattering medium, such as the earth's atmosphere or interstellar dust
psychol a process in which the frequency or intensity of a learned response is decreased as a result of reinforcement being withdrawnCompare habituation
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Medical definitions for extinction
extinction
[ ĭk-stĭngk′shən ]
n.
Progressive reduction in the strength of the conditioned response in successive conditioning trials during which only the conditioned stimulus is presented and the unconditioned stimulus is omitted.absorbance
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Scientific definitions for extinction
extinction
[ ĭk-stĭngk′shən ]
The fact of being extinct or the process of becoming extinct. See more at background extinction mass extinction.
A progressive decrease in the strength of a conditioned response, often resulting in its elimination, because of withdrawal of a specific stimulus.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Cultural definitions for extinction
notes for extinction
The fossil record tells us that 99.9 percent of all species that ever lived are now extinct.
The New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.