(Πρωταγόρας; Prōtagóras).
[1] Of Abdera, the first sophist, 5th cent. BC
P. of Abdera. The first sophist, 5th cent. BC, originator of the homo-mensura doctrine, known only from Plato's dialogue of the same name and from Diogenes Laertius.
A. Life
P.' date of birth and death are obscure. In Plato's dialogue Protagoras (Pl. Prt. 317c = 80 A 5 DK) - named after him - he says that he could be the father of…