adjective /ɪkˈstɪŋkt,ɛkˈstɪŋkt/
a) Extinguished, no longer alight (of fire, candles etc.)
Poor Edwards cigarillo was already extinct.
b) No longer in existence; having died out.
Luckily, such ideas about race are extinct in current sociological theory.
See Also: extinction, extinctive, extinguish
Wikipedia foundation.