Leucippus

noun

5th century bc Greek philosopher, who originated the atomist theory of matter, developed by his disciple, Democritus

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Examples from the Web for leucippus

Her punishment was submitted to Leucippus, who was now, with joyful acclaims, saluted as the rightful Duke of Lycia.
The Works of Charles and Mary Lamb|Charles Lamb
Of Leucippus, with whose name the theory is also associated, very little is known.
The Roman Poets of the Republic|William Young Sellar
He is supposed to have been acquainted with Leucippus, and sixty works were ascribed to him.
A Biographical Dictionary of Freethinkers of All Ages and Nations|Joseph Mazzini Wheeler
But though the main plot—that of Leucippus and Bacha—offered magnificent possibilities, they fail of realization.
Francis Beaumont: Dramatist|Charles Mills Gayley

Epicurus, like Democritus and Leucippus, maintained the atomic theory.
The Apologia and Florida of Apuleius of Madaura|Lucius Apuleius