what did the greek philosopher democritus describe atom
460 BCE- 370 BCE. Page 1. Democritus is an ancient Greek philosopher who first used the word âAtomâ. Democritus created the theory of the atom and he concluded that all mater is made up of the invisible particles called atoms.He also said that matter cannot come from nothing and matter is a âcombination and recombinationâ of atoms.60 BCE- 370 BCE. Page 1. Democritus is an ancient Greek philosopher who first used the word âAtomâ. Democritus created the theory of the atom and he concluded that all mater is made up of the invisible particles called atoms.