|Origin:||exstinctus, past participle of exstinguere; EXTINGUISH|
an extinct type of animal or plant does not exist any more:
Dinosaurs have been extinct for millions of years.
Pandas could become extinct in the wild.
an extinct species
if a type of person, custom, skill etc is extinct, it does not exist in society any more
an extinct volcano does not erupt any more [≠ active]