Ex-tīnct′1, a.
a. [Lat. extinctus, exstinctum, p. p. of extinguere. See EXTINGUISH.] 1. Extinguished; put out; quenched; as, fire, light, or a lamp, is extinct. Light, the prime work of God, to me is extinct. Milton. 2. Having ceased; ended; terminated; closed; as, a family becomes extinct; an extinct feud or law.