accretio
From LSJ
εἰ ἀποκρυπτόντων τῶν Μήδων τὸν ἥλιον ὑπὸ σκιῇ ἔσοιτο πρὸς αὐτοὺς ἡ μάχη καὶ οὐκ ἐν ἡλίῳ → if the Medes hid the sun, the battle would be to them in the shade and not in the sun
Latin > English
accretio accretionis N F :: increase, an increasing, increment
Latin > English (Lewis & Short)
accrētĭo: ōnis, f. accresco,
I an increasing, increment: lunam accretione et deminutione luminis ... significantem dies, Cic. Tusc. 1, 28, 68.
Latin > French (Gaffiot 2016)
accrētĭō (adcr-), ōnis, f., accroissement, augmentation : Cic. Tusc. 1, 68.
Latin > German (Georges)
accrētio, ōnis, f. (accresco), die Zunahme, accretio et deminutio luminis (des Mondlichts), Cic. Tusc. 1, 68.