designating or of the Greek philosophers before Socrates, often, specif., those whose philosophy was cosmological and ontological in emphasis
a pre-Socratic philosopher
Of or relating to the Greek philosophers or philosophical systems of thought before Socrates.
A pre-Socratic philosopher.
- (historical) Any one of the pre-Socratic philosophers, viz. Thales (circa 624-546 BC), Anaximander (circa 610-546 BC), Anaximenes (circa 585-525 BC), Pythagoras (circa 576-495 BC), Xenophanes (circa 570-480 BC), Heraclitus (circa 535-475 BC), Parmenides (early-5th century BC), Anaxagoras (circa 500-428 BC), Empedocles (circa 490-430 BC), and Democritus (circa 460-370 BC).