Metrodorus of Chios (Ancient Greek: Μητρόδωρος ὁ Χῖος; fl.
4th century BC) was a Greek philosopher, belonging to the school of Democritus, and an important forerunner of Epicurus.
Metrodorus was a pupil of Nessus of Chios, or, as some accounts prefer, of Democritus himself.
Metrodorus is especially interesting as a forerunner of Anaxarchus, and as a connecting link between atomism proper and the later scepticism.
If accurate, it demonstrates that Metrodorus had a cosmological philosophy that was advanced for the ancient world: "A single ear of wheat in a large field is as strange as a single world in infinite space.