Extinction1. (n.) The act of extinguishing or making extinct; a putting an end to; the act of putting out or destroying light, fire, life, activity, influence, etc.
2. (n.) State of being extinguished or of ceasing to be; destruction; suppression; as, the extinction of life, of a family, of a quarrel, of claim.
Thesaurus Entries
abolishment, abolition, abscission, amputation, annihilation, annulment, bane, biological death, blackout, blocking, burning out, burnout, cessation of life, choking, choking off, clinical death, controlling, crossing the bar, curtains, damping, death, death knell, debt of nature, decease, dematerialization, demise, departure, deracination, destruction, disappearance, disappearing, dispersion, dissipation, dissolution, dissolving, doom, dousing, dying, ebb of life, eclipse, elimination, end, end of life, ending, eradication, erasure, eternal rest, evanescence, evaporation, excision, exclusion, exit, expiration, extermination, extinguishment, extirpation, fadeaway, fadeout, fading, final summons, finger of death, fire fighting, flame-out, going, going off, going out, grave, hand of death, jaws of death, knell, last debt, last muster, last rest, last roundup, last sleep, leaving life, liquidation, loss of life, making an end, melting, mutilation, negation, nullification, occultation, parting, passing, passing away, passing over, perishing, purge, putting out, quenching, quietus, release, rescission, rest, reward, rooting out, sentence of death, shades of death, shadow of death, silencing, sleep, smotheration, smothering, snuffing, snuffing out, somatic death, stifling, strangulation, suffocation, summons of death, suppression, uprooting, vanishing, vanishing point, voiding, wipe