Look up extinction in Wiktionary, the free dictionary.

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Extinction or extinct may refer to:

In science:

• Extinction (biology, palaeontology) is the cessation of existence of a species or group of taxa, reducing biodiversity.
  • Holocene extinction event, the ongoing wave of extinctions coinciding with the rise of humans.
  • List of extinct animals
  • List of extinct plants
• In geology:
  • refers to a volcano that scientists consider unlikely to erupt again.
  • an optical mineralogy term describing minerals in cross-polarized light that are darkened, used with tools like extinction angle.
  • Undulose extinction, a geological term referring to the type of extinction that occurs in certain strained minerals under cross-polarized light.
  • Bird's eye extinction, a special type of extinction found in mica.
• In the physical sciences, extinction is another word for the attenuation of radiation by absorption and/or scattering.
  • Mass attenuation coefficient or Extinction coefficient, a measure of how well a material attenuates radiation.
  • Extinction (astronomy), the gradual reddening and dimming of light as it passes through gas and dust.

In Medicine:

• Extinction (psychology), the process by which learned behaviors cease to be reinforced and reduce in frequency.
• Extinction (neurology), a neurological disorder, and its subtype visual extinction.

In Television:

• Extinct (TV series) a TV series about endangered species on ITV1.
• Extinct (2001 TV series) a TV series about extinct species on Channel 4.
• Extinction (Enterprise episode), a third season episode of Star Trek: Enterprise
• Extinction (Smallville episode), the third episode of the third season of the WB original series, Smallville

In Movies:

• Resident Evil: Extinction, a 2007 film starring Milla Jovovich

• Aliens versus Predator: Extinction, the first Alien vs. Predator game released for PlayStation 2 and Xbox

In Books:

• Extinction (novel), a fantasy novel by Lisa Smedman
• Extinction, a science fiction novel by Ray Hammond

In Music:

• "Extinction", a song by Stigmata from the album Hollow Dreams

In other fields:

• Extinction (peerage), a peerage in the United Kingdom all of whose possible heirs have died
• Extinction (Sufism), to annihilate the self while remaining physically alive
• For the process of a language becoming extinct, see Language death, Extinct language and Language shift.

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