A / ătŏmus
adjective greek

ătŏmus

fem. ătŏma · neut. ătŏmum
Uncut; not to be cut; indivisible
Uncut, not to be cut, indivisible: Graeci (tus) stagonian et atomum tali modo appellant, Plin. 12, 14, 32, § 62.—Far more freq.,
an indivisible element
Subst.: ătŏmus (-ŏs), i, f., = ἡ ἄτομος, an indivisible element.
an atom; of which particles; all things are composed
Of matter, an atom, of which particles, acc. to the doctrine of Democritus, all things are composed (the distinction between an atom, an ultimate particle of matter, and a molecule, the ultimate combination of matter, was of course unknown to the ancients; syn.: corpora, corpora parva, corpora minuta, corpuscula, Lucr., Cic.): atomi, id est corpora individua propter soliditatem, Cic. Fin. 1, 6, 17; id. Tusc. 1, 18, 42; id. N. D. 1, 20, 54; id. Fat. 11, 24; id. N. D. 1, 24, 66; id. Ac. 1, 2, 6 al.; Vitr. 2, 2; Lact. de Ira Dei, 10 (where, as in Vitr. 2, 2, acc. to several editt., it stands as masc.); Isid. Orig. 13, 2, 1 sqq.—
in a moment; in the twinkling of an eye; in momento
Of time: in atomo, after the Gr. ἐν ἀτόμῳ, in a moment, in the twinkling of an eye, Tert. Res. Carn. 42 and 51; id. adv. Marc. 3, 24; so in the Gr. Test. 1 Cor. 15, 52, but rendered in momento by the Vulg.