Extinction definition

ĭk-stĭngkshən
Frequency:
The action of making or becoming extinct; annihilation.
noun
3
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The condition of being extinguished.
noun
1
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(physiology) A gradual decrease in the excitability of a nerve to a previously adequate stimulus, usually resulting in total loss of excitability.
noun
1
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The act of extinguishing.

The extinction of the fire took several hours.

noun
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The condition of being extinguished.

Mourned the extinction of their dreams.

noun
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(astronomy) The absorption or scattering of electromagnetic radiation emitted by astronomical objects by intervening dust and gas before it reaches the observer.
noun
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(physiology) A gradual decrease in the excitability of a nerve to a previously adequate stimulus, usually resulting in total loss of excitability.
noun
3
3
A dying out.
noun
3
3
The fact of being extinct or the process of becoming extinct.
noun
1
2
(psychology) A reduction or a loss in the strength or rate of a conditioned response when the unconditioned stimulus or reinforcement is withheld.
noun
1
2
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Extinction is defined as the act of ending the existence of a plant or animal.

An example of extinction is killing off the last of a rare bird.

noun
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1
The definition of extinction is putting something out.

An example of extinction is putting out a fire at a campsite.

noun
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1
(astronomy) The dimming of celestial objects, usually measured in magnitudes, due to scattering and absorption of their light as it passes through interstellar dust clouds and the earth's atmosphere.
noun
0
1
The act of extinguishing.
noun
0
1
A putting out or being put out, as of a fire.
noun
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1
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A destroying or being destroyed; annihilation; abolition.
noun
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1
The fact or state of being or becoming extinct.
noun
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1
(physiol., psychol.) The weakening and disappearance of a conditioned response that is no longer being reinforced.
noun
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1
The fact of being extinct or the process of becoming extinct.

The extinction of the passenger pigeon; languages that are in danger of extinction.

noun
0
1
(psychology) A reduction or a loss in the strength or rate of a conditioned response when the unconditioned stimulus or reinforcement is withheld.
noun
0
1
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The fact of being extinct or the process of becoming extinct.
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1
A progressive decrease in the strength of a conditioned response, often resulting in its elimination, because of withdrawal of a specific stimulus.
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1

Other Word Forms

Noun

Singular:
extinction
Plural:
extinctions

Origin of extinction

  • From French extinction, from Latin extinctio (“extinction, annihilation”), from extinguere, past participle extinctus (“to extinguish”); see extinguish.

    From Wiktionary