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no longer active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
on the rocks
to be in a state of difficulty, to be having problems (usually used for a relationship)
The man has been married for seven years but his relationship is now on the rocks.