Added 10 October 2026 parmenides noun Categories: PeopleRare Words noun ! Definition from WordNet 3.1, Princeton University. More about parmenides at Wordnik → Where our words come from → A presocratic Greek philosopher born in Italy; held the metaphysical view that being is the basic substance and ultimate reality of which all things are composed; said that motion and change are sensory illusions (5th century BC). Related Words: eleaticanaximenesanaximanderplethonepicurusleucippuseleaticismthalespre-socraticempedoclesmilesianepimenides Back to today's word