Etymology
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Words related to atomic

atomistic (adj.)
1809, in reference to the classical philosophical or metaphysical doctrine of atomism (1670s); modern sense (logical atomism) traces to 1914 and Bertrand Russell and the philosophy that, "while maintaining that there are many things, ... denies that there is a whole composed of these things."
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atom (n.)
late 15c., as a hypothetical indivisible extremely minute body, the building block of the universe, from Latin atomus (especially in Lucretius) "indivisible particle," from Greek atomos "uncut, unhewn; indivisible," from a- "not" (see a- (3)) + tomos "a cutting," from temnein "to cut" (from PIE root *tem- "to cut"). An ancient term of philosophical speculation (in Leucippus, Democritus); revived scientifically 1805 by British chemist John Dalton. In late classical and medieval use also a unit of time, 22,560 to the hour. Atom bomb is from 1945 as both a noun and a verb; compare atomic.
-ic 

Middle English -ik, -ick, word-forming element making adjectives, "having to do with, having the nature of, being, made of, caused by, similar to," from French -ique and directly from Latin -icus or from cognate Greek -ikos "in the manner of; pertaining to." From PIE adjective suffix *-(i)ko, which also yielded Slavic -isku, adjectival suffix indicating origin, the source of the -sky (Russian -skii) in many surnames. In chemistry, indicating a higher valence than names in -ous (first in benzoic, 1791).

In Middle English and after often spelled -ick, -ike, -ique. Variant forms in -ick (critick, ethick) were common in early Modern English and survived in English dictionaries into early 19c. This spelling was supported by Johnson but opposed by Webster, who prevailed.

pre-atomic (adj.)

"before the atomic age," 1914, in "World Set Free," in which H.G. Wells anticipates the word the future would use to look back from a time defined by events that hadn't yet happened in his day; from pre- + atomic.

sub-atomic (adj.)
also subatomic, 1874, from sub- + atomic. Sub-atom is attested from 1868.