Lewis & Short

postĕrĭtas, ātis, f. [posterus],

  1. I. future time, futurity, after-ages, succeeding generations, posterity (class.): sperare videor, Scipionis et Laelii amicitiam notam posteritati fore, Cic. Lael. 4, 15: infinita, id. Att. 12, 19, 1: hujus rei ne posteritatem quidem omnium saeculorum, umquam immemorem esse, id. Phil. 2, 22, 54: sera, a late posterity, Ov. P. 4, 8, 48: aeterna, id. H. 16, 374: posteritati servire, one’s fame with posterity, Cic. Tusc. 1, 15, 35: posteritatis otio consulere, id. Fam. 2, 18, 3: habeat rationem posteritatis et periculi sui, Caes. B. C. 1, 13: in posteritatem, in the distant future, hereafter: quanta tempestas invidiae nobis … in posteritatem impendeat, Cic. Cat. 1, 9, 22; Just. 2, 3, 15: sola posteritatis dilectio, desire for offspring, Vulg. Tob. 8, 9.
    1. B. Transf., of animals, offspring (poet.), Juv. 8, 62.
  2. II. Trop., the last place, inferiority (eccl. Lat.): principalem veritati, et posteritatem mendacitati deputare, Tert. Praescr. 31.