LATIN DICTIONARYLexicon Latīnum
adjective

trĭnundĭnus

Meaning

  1. belonging to three weekly market-days

trĭnundĭnus, a, um, adj. tres nundinae,
I. of or belonging to three weekly market-days (very rare): trinundino die, after seventeen days, Macr. S. 1, 16, 34; v. trinus, II. B., and nundinus, III. — Hence, adv.: trĭnundĭnō, = trinundino die, Macr. S. 2, 13, 7.

Quick answers

What does trĭnundĭnus mean in Latin?
trĭnundĭnus, a adjective, means “belonging to three weekly market-days”.