adunatio
From LSJ
κοινὸν τύχη, γνώμη δὲ τῶν κεκτημένων → good luck is anyone's, judgment belongs only to those who possess it
Latin > English (Lewis & Short)
ădūnātĭo: ōnis, f. (like the verb aduno, only in later authors),
I a making into one, a uniting, a union, ἕνωσις, Cyp. Ep. 57 (60 Oxon.), 61 (62 ib.); Cassiod. Ep. 4, 33 and 36.
Latin > French (Gaffiot 2016)
ădūnātĭō, ōnis, f. (aduno), assemblage, réunion : Tert. Pud. 5