retinentia
From LSJ
τί ἦ μοι ταῦτα περὶ δρῦν ἢ περὶ πέτρην → but what is this to me, about an oak or a rock | but what are these things about a tree or a rock to me | why all this about trees and rocks | why all this about what we have nothing to do with | but why am I off on this tangent
Latin > English (Lewis & Short)
rĕtĭnentĭa: ae, f. retineo, II.,
I a retaining in the memory, recollection: actarum rerum, Lucr. 3, 675: nostri, id. 3, 851.
Latin > French (Gaffiot 2016)
rĕtĭnentĭa,¹⁶ æ, f. (retineo), souvenance, ressouvenir : Lucr. 3, 673.
Latin > German (Georges)
retinentia, ae, f. (retineo), das Behalten im Gedächtnisse, die Erinnerung, actarum rerum, Lucr. 3, 673: nostri, Lucr. 3, 849.