συνεκδοχή
From LSJ
Ὥς ἐστ' ἄπιστος (ἄπιστον) ἡ γυναικεία φύσις → Muliebris o quam sexus est infida res → Wie unverlässlich ist die weibliche Natur
English (LSJ)
ἡ,
A understanding one thing with another: hence in Rhet., synecdoche, an indirect mode of expression, when the whole is put for a part or vice versa, Quint.Inst.8.6.19, Aristid.Quint.2.9, Ps.-Plu.Vit.Hom.22.