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atomic (adj.)[atomic 词源字典]: 1670s as a philosophical term (see atomistic); scientific sense dates from 1811, from atom + -ic. Atomic number is from 1821; atomic mass is from 1848. Atomic energy first recorded 1906 in modern sense (as intra-atomic energy from 1903).
March, 1903, was an historic date for chemistry. It is, also, as we shall show, a date to which, in all probability, the men of the future will often refer as the veritable beginning of the larger powers and energies that they will control. It was in March, 1903, that Curie and Laborde announced the heat-emitting power of radium. [Robert Kennedy Duncan, "The New Knowledge," 1906]
Atomic bomb first recorded 1914 in writings of H.G. Wells, who thought of it as a bomb "that would continue to explode indefinitely."
When you can drop just one atomic bomb and wipe out Paris or Berlin, war will have become monstrous and impossible. [S. Strunsky, "Yale Review," January 1917]
Atomic Age is from 1945. Atomical is from 1640s.[atomic etymology, atomic origin, 英语词源]
Doomsday (n.): Old English domes dæg, from domes, genitive of dom (see doom (n.)) + dæg "day" (see day (n.)).

In medieval England it was expected when the world's age reached 6,000 years from creation, which was thought to have been in 5200 B.C. Bede, c.720, complained of being pestered by rustici asking him how many years till the sixth millennium ended. There is no evidence for a general panic in the year 1000 C.E. Doomsday machine "bomb powerful enough to wipe out human life on earth" is from 1960.
efface (v.): "to erase or obliterate," especially something written or carved, late 15c., from Middle French effacer, from Old French esfacier (12c.) "to wipe out, destroy," literally "to remove the face," from es- "out" (see ex-) + face "appearance," from Latin facies "face" (see face (n.)). Related: Effaced; effacing. Compare deface.
extinction (n.): early 15c., "annihilation," from Latin extinctionem/exstinctionem (nominative extinctio/exstinctio) "extinction, annihilation," noun of action from past participle stem of extinguere/exstinguere "quench, wipe out" (see extinguish). Originally of fires, lights; figurative use, the wiping out of a material thing (a debt, a person, a family, etc.) from early 17c.; of species by 1784.
extinguish (v.): 1540s, from Latin extinguere/exstinguere "quench, put out (what is burning), wipe out, obliterate," from ex- "out" (see ex-) + stinguere "quench," apparently an evolved sense from PIE *steig- "to prick, stick, pierce" (see stick (v.)). But see distinguish (v.). Related: extinguishable (c. 1500); extinguished; extinguishing.
liquidate (v.): 1570s, "to reduce to order, to set out clearly" (of accounts), from Late Latin or Medieval Latin liquidatus, past participle of liquidare "to melt, make liquid or clear, clarify," from Latin liquidus (see liquid). Sense of "clear away" (a debt) first recorded 1755. The meaning "wipe out, kill" is from 1924, possibly from Russian likvidirovat. Related: Liquidated; liquidating.
wipeout (n.): also wipe-out, 1962, American English, surfer slang, from wipe (v.) + out. Sense of "destruction, defeat, a killing" is recorded from 1968. Verbal phrase wipe out "destroy, obliterate" is from 1610s.