The definition of extinct is someone or something that has burned out, is no longer in use or no longer exists.(adjective)
See extinct in Webster's New World College Dictionary
Origin: ME < L extinctus, exstinctus, pp. of exstinguere: see extinguish
See extinct in American Heritage Dictionary 4
Origin: Middle English
Origin: , from Latin exstīnctus
Origin: , past participle of exstinguere, to extinguish; see extinguish.
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