extinction

no longer active; extinguished; "the extinction of the volcano"

no longer in existence; "the extinction of a species"

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

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

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

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