adunatio
From LSJ
ὅταν δὲ τἄμ' ἀθυμήσαντ' ἴδῃς, σύ μου τὸ δεινὸν καὶ διαφθαρὲν φρενῶν ἴσχναινε παραμυθοῦ θ' → whenever you see me despondent over my situation, do what you can to lessen and relieve what is wild and senseless in my thinking | whenever you see me despondent, you must cure the grim derangement of my mind and encourage me
Latin > English
adunatio adunationis N F :: union, uniting, making into one
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 || union, unité : Cypr. Ep. 63, 13.
Latin > German (Georges)
adūnātio, ōnis, f. (aduno) = ἕνωσις, die Vereinigung, Verbindung, Spät.