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extinction
[ik-stingk-shuhn]
noun
the act of extinguishing.
the fact or condition of being extinguished or extinct.
suppression; abolition; annihilation.
the extinction of an army.
Biology.the act or process of becoming extinct; a coming to an end or dying out.
the extinction of a species.
Psychology.the reduction or loss of a conditioned response as a result of the absence or withdrawal of reinforcement.
Astronomy.the diminution in the intensity of starlight caused by absorption as it passes through the earth's atmosphere or through interstellar dust.
Crystallography, Optics.the darkness that results from rotation of a thin section to an angle extinction angle at which plane-polarized light is absorbed by the polarizer.
extinction
/ ɪˈɪŋʃə /
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a process in which the frequency or intensity of a learned response is decreased as a result of reinforcement being withdrawn Compare habituation
extinction
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.
Other 51Թ Forms
- nonextinction noun
- preextinction noun
- self-extinction noun
51Թ History and Origins
Origin of extinction1
Example Sentences
Indeed, many of these weird plants are at risk of extinction, as underscored in a report published last October examining the threats facing corpse flowers.
Forms of relation with land and water which exceed the fiscal are being flattened towards extinction.
Endangered water voles in Wales are being fed edible glitter in a bid to save them from extinction.
An "extinction crisis" is happening in Britain's temperate rainforests where some of the world's rarest mosses, lichens and liverworts are vanishing, ecologists have warned.
The goal is not just to bring extinct creatures back to life, but to recover populations nearing extinction.
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