trinundinus

trĭnundĭnus, a, um, adj. [tres nundinae],

• 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.

trinūndinus, a, am (tres u. nundinae), zu drei Wochenmärkten gehörig, trinundino die, Rutil. bei Macr. sat. 1, 16, 34. – Abl. trinūndinō adv., an drei Wochenmärkten, Macr. sat. 2, 13, 7. Schol. Bob. Cic. Sest. 24, 1. p. 300, 23 B.