n.
1.no longer in existence
2.no longer active
3.the reduction of the intensity of radiation as a consequence of absorption and radiation
4.complete annihilation
5.a conditioning process in which the reinforcer is removed and a conditioned response becomes independent of the conditioned stimulus
6.the act of extinguishing
Idiom of the Day
get one's hands on (someone or something)
to get someone or something in one's grasp
"When I get my hands on a hammer I will help you fix the door."