Lewis & Short

Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.

pĕrendĭnus, a, um, adj. [perendie], after to-morrow (class.): tot homines tam ingeniosos, per tot annos statuere non potuisse, utrum diem tertium, an perendinum dici oporteret, Cic. Mur. 12, 27: perendino die, Caes. B. G. 5, 30.
Absol. (anteand post-class.): tu in perendinum paratus sis, against the day after to-morrow, Plaut. Trin. 5, 2, 65: dies perendini, Gell. 10, 24, 9.