Noun
One who holds to the atomic philosophy or theory.
Source: Webster's dictionaryThe Epicureans also used the atomist theories of Democritus and Leucippus to assert that man has free will. Source: Internet
Particle theory main Pierre Gassendi Pierre Gassendi (1592–1655), an atomist, proposed a particle theory of light which was published posthumously in the 1660s. Source: Internet
Nancey Murphy has claimed that there are two species of ontological reductionism: one that denies that wholes are anything more than their parts; and the stronger thesis of atomist reductionism that wholes are not "really real". Source: Internet
Like Democritus, he was an atomist, believing that the fundamental constituents of the world were indivisible little bits of matter ( atoms ; Greek: ἄτομος atomos, "indivisible") flying through empty space (Greek: κενόν kenon). Source: Internet