bul: изчезване (екологично)

Information
has URI	http://lexvo.org/id/term/bul/%D0%B8%D0%B7%D1%87%D0%B5%D0%B7%D0%B2%D0%B0%D0%BD%D0%B5%20(%D0%B5%D0%BA%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D1%87%D0%BD%D0%BE)

Meaning
means	(noun) a conditioning process in which the reinforcer is removed and a conditioned response becomes independent of the conditioned stimulus extinction, experimental extinction
means	(noun) no longer active; extinguished; "the extinction of the volcano" extinction
means	(noun) the reduction of the intensity of radiation as a consequence of absorption and radiation extinction
means	(noun) no longer in existence; "the extinction of a species" defunctness, extinction
means	(noun) complete annihilation; "they think a meteor cause the extinction of the dinosaurs" extinction, extermination