extinction

(n) no longer active; extinguished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

defunctness extermination experimental extinction extinguishing quenching

extinction angle