accretio
From LSJ
ἑτέρως ἠδύνατο βέλτιον ἢ ὡς νῦν ἔχει κατεσκευάσθαι → otherwise they could have been constructed better than they are now (Galen, On the use of parts of the body 4.143.1 Kühn)
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.