φωτοβολία
From LSJ
ὁ χρόνος ἐστὶ δάνος, τὸ ζῆν πικρός ἐσθ' ὁ δανίσας → time is a loan, and he who lent you life is a hard creditor | time is on loan and life's lender is a prick
English (LSJ)
ἡ,
A beam, ray, Sch.Par.A.R.4.728 (pl.).
German (Pape)
[Seite 1323] ἡ, das Lichtwerfen, Strahlen, der Strahl, Schol. Ap. Rh. 4, 725.