πολλαπλασιάζω
From LSJ
ἀναγκαίως δ' ἔχει βίον θερίζειν ὥστε κάρπιμον στάχυν, καὶ τὸν μὲν εἶναι, τὸν δὲ μή → But it is our inevitable lot to harvest life like a fruitful crop, for one of us to live, one not. (Euripides, Hypsipyle fr. 60.94ff.)
English (LSJ)
A multiply, ἀριθμοὶ πολλαπλασιάσαντες ἀλλήλους Euc.7.30, cf. Archim.Aren.3.6; ὁ Α τὸν Β -πλασιάσας τὸν Δ πεποίηκεν Euc.7.16; also ἀριθμοὺς δι' ἀλλήλων π. Papp.22.4, Hero Metr.2 Praef.; τι ἐπί τι ib.1.5, 2.3: generally, Porph.Gaur.7.2:—Pass., Archim. Sph.Cyl.1.2, etc.: c. dat., to be multiplied by . ., Arist.Ph.237b33, Archim.Aren.3.7; ἐπί τι Euc.9.36; κατά τι Papp.100.20. II metaph., multiply, increase, εὐεργετήματα, ἐμπειρίαν, Plb.30.4.13, D.S. 1.1.