extinct in Bulgarian

(dated) Of fire, etc.: no longer alight; of a light, etc.: no longer shining; extinguished, quenched.

(chiefly, biology) Of an animal or plant species, a class of people, a family, etc.: having died out completely; no longer in existence.

(specifically, biology) To cause (an animal or plant species) to die out completely or become extinct (adjective sense 2.3).