— atomist , n. — atomistic, atomistical , adj. — atomistically , adv.
/at"euh miz'euhm/ , n.
1. Also called atomic theory . Philos. the theory that minute, discrete, finite, and indivisible elements are the ultimate constituents of all matter.
2. Psychol. a method or theory that reduces all psychological phenomena to simple elements.
[ 1670-80 ]