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Extinction or extinct may refer to: Wikipedia does not have an article with this exact name. ... Wiktionary (a portmanteau of wiki and dictionary) is a multilingual, Web-based project to create a free content dictionary, available in over 150 languages. ...

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
• Extinction (astronomy), the gradual reddening and dimming of light as it passes through gas and dust
• Extinction (psychology), the process by which learned behaviors cease to be reinforced and reduce in frequency
• Extinction coefficient, a measure of how well a material absorbs electromagnetic radiation in optics
• Undulose extinction, a geological term referring to the type of extinction that occurs in certain minerals under cross polarized light
• Visual extinction, a neurological disorder

In Television: For other uses, see Extinction (disambiguation). ... The Dodo, a bird of Mauritius, became extinct during the mid-late 17th century after humans destroyed the forests where the birds made their homes and introduced animals that ate their eggs. ... // Extinct Animals redirects here. ... // Main article: Prehistoric plant Cooksonia sp. ... Extinction is a term used in astronomy to describe the absorption of light from astronomical objects by matter between them and the observer. ... Extinction in psychology refers to extinction of conditional reflexes when a reinforcement is witheld. ... The parameter used to describe the interaction of electromagnetic radiation with matter is the complex index of refraction, ñ, which is a combination of a real part and an imaginary part. ... Undulose extinction is a geological term referring to the type of extinction that occurs in certain minerals when examined in thin section under cross polarized light. ... Visual extinction is a neurological disorder characterised by severe impairment in identifying two or more visual stimuli displayed briefly at the same time. ...

• 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: Extinct was a British television series that featured eight celebrities highlighting the plight of some of the worlds most endangered species. ... ITV1 is the name, in England, Wales and the Scottish borders, for a terrestrial, free-to-air television channel, broadcast in the United Kingdom by the ITV network. ... Extinct was a Channel 4 TV series, that originally aired in late 2001. ... This article is about the British television station. ... Extinction is the title of an episode of Star Trek: Enterprise from the third season. ... Extinction is the third episode of the third season of the WB original series, Smallville. ...

• 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 other fields: Extinction is a fantasy novel by Lisa Smedman. ... // Ray Hammond is a British author and futurist. ...

• 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
• Extinction (video game), an upcoming Xbox 360 Video game.

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