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www.thoughtco.com/animal-extinction-overview-127885

The extinction of an animal species occurs when the last individual member of that species dies. Although a species may be "extinct in the wild," the species is not extinct until every individual, regardless of location, captivity, or ability to breed, has died.

en.wikipedia.org/wiki/Extinction

In biology, extinction is the termination of an organism or of a group of organisms , usually 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.

www.britannica.com/science/extinction-biology

Extinction: In biology, extinction is the dying out or extermination of a species. Extinction occurs when species are diminished because of environmental forces (natural or human-made) or because of evolutionary changes in their members. Learn more about mass extinctions and modern extinctions.

www.thefreedictionary.com/Animal+extinction

Animal extinction synonyms, Animal extinction pronunciation, Animal extinction translation, English dictionary definition of Animal extinction. n. 1. a. The act of extinguishing: The extinction of the fire took several hours. b. The condition of being extinguished: mourned the extinction of her...

www.merriam-webster.com/dictionary/extinction

Extinction definition is - the act of making extinct or causing to be extinguished. How to use extinction in a sentence.

medical-dictionary.thefreedictionary.com/Animal+extinction

extinction [eks-ting´shun] 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. ex·tinc·tion (eks-tingk'shŭn), 1. In behavior modification or in classical or operant conditioning, a progressive decrease in the frequency ...

legal-dictionary.thefreedictionary.com/Animal+extinction

The Denver restaurant, expected to open in December, will be what Haider said is a third generation of his concept, in which aliens land on Earth and warn humans to curb pollution, global warming and animal extinction.

www.collinsdictionary.com/dictionary/english/extinction

The extinction of a species of animal or plant is the death of all its remaining living members. An operation is beginning to try to save a species of crocodile from extinction. Many species have been shot to the verge of extinction ...

www.thefreedictionary.com/extinct

Plant and animal species become extinct for many reasons, including climate change, disease, destruction of habitat, and local or worldwide natural disasters. The great majority of species that have ever lived are now extinct. 2. No longer active or burning: an extinct volcano.

www.dictionary.com/browse/extinct

Having no living members. Species become extinct for many reasons, including climate change, disease, destruction of habitat, local or worldwide natural disasters, and development into new species (speciation). The great majority of species that have ever lived-probably more than 99 percent-are now extinct.