προμήτωρ

ορος, ἡ
A. first mother of a race, A. Th. 140 (lyr.), E. Ph. 676 (lyr.), 828 (lyr.), Luc. Am. 19.
II. masc., maternal grandfather, Hsch.
III. epith. of Athena, prob. in Them. Or. 13.180a (voc. πρόματερ codd.).
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project