trīdŭānus — Lewis & Short
trīdŭānus, a, um, adj.triduum,
I lasting three days, of three days' continuance (post-class.):
spectaculum,App. M. 10, p. 247, 27:
jejunia,Hier. Ep. 54, 10:
funus,Paul. Nol. Carm. 12, 207.