LATIN DICTIONARYLexicon Latīnum
adjective

postrīdŭānus

Meaning

  1. that is

postrīdŭānus or postrīdĭānus, a, um, adj. postridie,
I. that is, comes, or happens on the following day (post-class.): dies, Macr. S. 1, 15 fin.; 1, 16, 21.

Quick answers

What does postrīdŭānus mean in Latin?
postrīdŭānus, a adjective, means “that is”.