πρωτᾰγωνιστ-ής,οῦ,ὁ, on the stage,
A. one who plays the first part, chief actor, ib. 816f ; π. τοῦ δράματος
Luc. Cal. 7
: metaph., [ ὁ Αἰσχύλος] τὸν λόγον π. παρεσκεύασεν
Arist. Po. 1449a18
: generally,leader, π. τῆς ὑπηρεσίας
Clearch. 25
;τοῖς μαθηματικοῖς, of king Antiochus, Ps.- Diocl. ap. Paul.Aeg. 1.100 : expl. ofπρόμαχος, EM 612.51 .