Noun

• S: (n) extinction (no longer active; extinguished) "the extinction of the volcano"
• S: (n) extinction, defunctness (no longer in existence) "the extinction of a species"
• S: (n) extinction (the reduction of the intensity of radiation as a consequence of absorption and radiation)
• S: (n) extinction, extermination (complete annihilation) "they think a meteor cause the extinction of the dinosaurs"
• S: (n) extinction, experimental extinction (a conditioning process in which the reinforcer is removed and a conditioned response becomes independent of the conditioned stimulus)
• S: (n) extinction, extinguishing, quenching (the act of extinguishing; causing to stop burning) "the extinction of the lights"