LATIN DICTIONARYLexicon Latīnum
adverb

prĭorsum

Meaning

  1. forwards

prĭorsum and prĭorsus, adv. prisversus,
I. forwards (post-class.): corpus aut accedit priorsum, aut retrorsum recedit (al. prorsum), Macr. S. 7, 9: pergere, id. ib. 7, 13: movetur corpus priorsus ac retrorsus, Claud. Mam. Stat. Anim. 1, 18.

Quick answers

What does prĭorsum mean in Latin?
prĭorsum, a adverb, means “forwards”.