Definitions for "extinguished"
caused to die out because of the absence or withdrawal of reinforcement; -- of a conditioned response.
of a conditioned response; caused to die out because of the absence or withdrawal of reinforcement
Keywords:  locus, drift, allelic, variant, random
Loss of one allelic variant at a locus due to random genetic drift.
no longer burning; -- of a fire.
no longer existing; -- of species.
A lighted aid to navigation which fails to show a light characteristic.