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perpĕtŭĭtas, ātis, f. [perpetuus], uninterrupted or continual duration, uninterrupted progress or succession, continuity, perpetuity (good prose; cf. infinitas): non ex singulis vocibus philosophi spectandi sunt, sed ex perpetuitate atque constantiā, i. e. from their consistency, Cic. Tusc. 5, 10, 31: ad perpetuitatem, to perpetuity, forever, id. Off. 2, 7, 23: in vitae perpetuitate, through the whole course of our lives, id. ib. 1, 33, 119: perpetuitas verborum, an unbroken succession, id. de Or. 3, 49, 190: sermonis, id. ib. 2, 54, 120: dicendi, id. Or. 2, 7: laudis, id. Fam. 10, 25.
In plur.: et opacae perpetuitates, unbroken tracts of land, Vitr. 2, 10. 1.