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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 extinction angle at which plane-polarized light is absorbed by the polarizer.
extinction
/ ɪ°ìˈ²õ³Ùɪŋ°ìʃə²Ô /
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a process in which the frequency or intensity of a learned response is decreased as a result of reinforcement being withdrawn Compare habituation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
/ Ä°ì-²õ³ÙIJԲµ°ì′²õ³óÉ™²Ô /
- The fact of being extinct or the process of becoming extinct.
- See more at background extinction
- A progressive decrease in the strength of a conditioned response, often resulting in its elimination, because of withdrawal of a specific stimulus.
Notes
Other ˜yÐÄvlog Forms
- ²Ô´Ç²Ôe³æ·³Ù¾±²Ô³¦î€ƒt¾±´Ç²Ô noun
- ±è°ù±ðe³æ·³Ù¾±²Ô³¦î€ƒt¾±´Ç²Ô noun
- ²õ±ð±ô´Ú-±ð³æ·³Ù¾±²Ô³¦î€ƒt¾±´Ç²Ô noun
˜yÐÄvlog History and Origins
Origin of extinction1
Example Sentences
The River Usk is a designated special area of conservation protected by law, due to its importance for rare wildlife including the Atlantic salmon, which is threatened with extinction from Wales.
The extinction of species is like bankruptcy, and when it finally occurs, there’s no going back.
The River Usk is a designated special area of conservation protected by law due to its importance for rare wildlife including the Atlantic salmon, which is threatened with extinction from Wales.
The animals had once roamed the area before being hunted to extinction there; scientists were seeking to reestablish the species.
Unfortunately, lead poisoning, habitat loss, poaching and pesticide exposure have driven the majestic birds to the brink of extinction.
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