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Extinction (Noun)

A conditioning process in which the reinforcer is removed and a conditioned response becomes independent of the conditioned stimulus.

Nouns denoting cognitive processes and contents.

The reduction of the intensity of radiation as a consequence of absorption and radiation.

Nouns denoting natural processes.

No longer active; extinguished; "the extinction of the volcano".

Nouns denoting natural processes.

The extinction of the volcano was confirmed when the last tremors ceased after a month of inactivity.
The process of erosion marked the extinction of the once-thriving river delta.
Scientists declared the extinction of the eruption after several weeks of declining ash output.
The city was declared a dead zone due to the extinction of its commercial center through gentrification.
After a decade of dormancy, the international team confirmed the extinction of volcanic activity in the notorious Icelandic volcano.

No longer in existence; "the extinction of a species".

Nouns denoting natural processes.

Complete annihilation; "they think a meteor cause the extinction of the dinosaurs".

Nouns denoting natural events.

Many scientists believe that a meteor impact led to the extinction of the dinosaurs millions of years ago.
The loss of biodiversity on the planet is a major concern for many environmentalists who warn of an impending extinction.
Human activity such as pollution and overfishing can cause extinction of entire marine ecosystems.
In some areas, hunting and poaching have driven species to extinction, with no chance of revival.
Climate change poses a major threat to many species and could potentially lead to widespread extinction.

The act of extinguishing; causing to stop burning; "the extinction of the lights".