extinction

  1. no longer in existence
  2. no longer active; extinguished
  3. the reduction of the intensity of radiation as a consequence of absorption and radiation
  4. complete annihilation
  5. a learning process in which the reinforcer is removed and a conditioned response becomes independent of the conditioned stimulus
  6. the act of extinguishing; causing to stop burning
...

Extinction

In biology and ecology, extinction is the end of an organism or of a group of organisms (taxon), normally a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and recover may have been lost before this point. Because a species` potential range may be very....
Found on http://en.wikipedia.org/wiki/Extinction

Extinction

-LEVEL EVENT An Extinction-Level Event is a catastrophic event (such as a large asteroid or comet hitting the Earth, a large change in the Earth's temperature/sea level, tremendously increased volcanism, etc.) that is capable of causing a mass extinction.
Found on http://www.enchantedlearning.com/subjects/dinosaurs/glossary/

Extinction

(1) the complete disappearance of a species from the earth (Miller 1990:A5); (2) the total disappearance of a species from an island (this does not preclude later recolonization) (MacArthur and Wilson 1960:187) (cf Extirpation, Local extinction).
Found on http://www.encyclo.co.uk/local/21070

Extinction

(1) the complete disappearance of a species from the earth (Miller 1991:A5); (2) the total disappearance of a species from an island (this does not preclude later recolonization) (MacArthur and Wilson 1967:187) (cf Extirpation, Local extinction).
Found on http://www.encyclo.co.uk/local/22030

Extinction

(1) the complete disappearance of a species from the earth (Miller 1991A5); (2) the total disappearance of a species from an island (this does not preclude later recolonization) (MacArthur and Wilson 1967187) (cf Extirpation, Local extinction).
Found on http://www.encyclo.co.uk/local/22216

extinction

(ek-stink´shәn) in psychology, the disappearance of a conditioned response as a result of its not being reinforced; also, the process by which the disappearance is accomplished. See also conditioning.
Found on http://www.encyclo.co.uk/local/21001

Extinction

(from the article `German literature`) ...has fled there to escape trial for Nazi crimes (the figure of the father is modeled on the Nazi doctor Josef Mengele). Auslöschung: ein Zerfall ...
Found on http://www.britannica.com/eb/a-z/e/62

extinction

(Of a peerage or baronetcy) no longer existing, because the line of persons in remainder to the title has died out. ...
Found on http://www.encyclo.co.uk/local/20688

extinction

[n] - no longer active 2. [n] - no longer in existence 3. [n] - the reduction of the intensity of radiation as a consequence of absorption and radiation 4. [n] - complete annihilation 5. [n] - a conditioning process in which the reinforcer is removed and a conditioned response becomes independent of the conditioned stimulus 6...
Found on http://www.webdictionary.co.uk/definition.php?query=extinction

Extinction

• (n.) The act of extinguishing or making extinct; a putting an end to; the act of putting out or destroying light, fire, life, activity, influence, etc. • (n.) State of being extinguished or of ceasing to be; destruction; suppression; as, the extinction of life, of a family, of a quarrel, of claim.
Found on http://thinkexist.com/dictionary/meaning/extinction/

extinction

quenching noun the act of extinguishing; causing to stop burning; `the extinction of the lights`
Found on http://wordnetweb.princeton.edu/perl/webwn?s=extinction

extinction

extermination noun complete annihilation; `they think a meteor cause the extinction of the dinosaurs`
Found on http://wordnetweb.princeton.edu/perl/webwn?s=extinction

extinction

(biology) In biology, the complete disappearance of a species from the planet. Extinctions occur when a species becomes unfit for survival in its natural habitat usually to be replaced by another, better-suited species. An organis...
Found on http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0008006.html

Extinction

[astronomy] Extinction is a term used in astronomy to describe the absorption and scattering of electromagnetic radiation by dust and gas between an emitting astronomical object and the observer. Interstellar extinction was first recognized as such in 1930 by Robert Julius Trumpler. However, its effects had been noted in 1847 by Friedrich G...
Found on http://en.wikipedia.org/wiki/Extinction_(astronomy)

Extinction

[neurology] Extinction is a neurological disorder that impairs the ability to perceive multiple stimuli of the same type simultaneously. Extinction is usually caused by damage resulting in lesions on one side of the brain. Those who are affected by extinction have a lack of awareness in the contralesional side of space (towards the left sid...
Found on http://en.wikipedia.org/wiki/Extinction_(neurology)

Extinction

[optical mineralogy] Extinction is a term used in optical mineralogy and petrology, which describes when cross-polarized light dims, as viewed through a thin section of a mineral in a petrographic microscope. Isotropic minerals, opaque (metallic) minerals, or amophous materials (glass) show no light (i.e. constant extinction). Anisotropic m...
Found on http://en.wikipedia.org/wiki/Extinction_(optical_mineralogy)

Extinction

[psychology] Extinction is observed in both operantly conditioned and classically conditioned behavior. When operant behavior that has been previously reinforced no longer produces reinforcing consequences the behavior gradually stops occurring. In classical conditioning, when a conditioned stimulus is presented alone, so that it no longer ...
Found on http://en.wikipedia.org/wiki/Extinction_(psychology)

Extinction

Ex·tinc'tion noun [ Latin extinctio , exstinction : confer French extinction .] 1. The act of extinguishing or making extinct; a putting an end to; the act of putting out or destroying light, fire, life, activity, influence, etc. 2. State of being extinguished or ...
Found on http://www.encyclo.co.uk/webster/E/96

extinction

1. <ecology> The death of an entire species. ... 2. <psychology> The procedure of presenting the conditioned stimulus without reinforcement to an organism previously conditioned. It refers also to the diminution of a conditioned response resulting from this procedure. ... (27 Jun 1999) ...
Found on http://www.encyclo.co.uk/local/20973

Extinction

Disappearance of a species from all or part of their geographic range. Also see background extinction and mass extinction.
Found on http://www.physicalgeography.net/physgeoglos/e.html

Extinction

Disappearance of a taxonomic group of organisms from existence in all regions.
Found on http://www.encyclo.co.uk/local/20945

Extinction

Extinction is the process in which groups of organisms (species) die out.
Found on http://www.enchantedlearning.com/subjects/dinosaurs/glossary/

Extinction

Extinction is when the conditional response no longer occurs i.e. salivating to the sound of a bell alone. To resurrect the CR the re-presentation of the CS and UCS together is again required i.e. Bell and food.
Found on http://www.gerardkeegan.co.uk/glossary/gloss_a.htm

extinction

extinction, in biology, disappearance of species of living organisms. Extinction occurs as a result of changed conditions to which the species is not suited. If no member of the affected species survives and reproduces, the entire line dies out, leaving no descendants. This was the case with the sab...
Found on http://www.infoplease.com/ce6/sci/A0818050.html
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