plŭvĭālis

I. of or belonging to rain, rainy, rain-: Auster, Verg. G. 3, 429: Haedi, id. A. 9, 668: sidus, Ov. M. 3, 594: fungi, id. ib. 7, 393: aqua, Sen. Q. N. 3, 7, 4: dies, Col. 2, 13: imbres, Tac. H. 5, 23.