Definition of "Pythagorean"

Plato could still speak the language of archaic myth. He could speak it, because he was a Pythagorean, and myth was their technical language.

1981, William Irwin Thompson, The Time Falling Bodies Take to Light: Mythology, Sexuality and the Origins of Culture, London: Rider/Hutchinson & Co., page 268

Plato clearly distinguished the Orphics and the Pythagoreans.

2021, Andrea Nightingale, Philosophy and Religion in Plato's Dialogues, Cambridge University Press, page 137