Source : Webster's Revised Unabridged Dictionary (1913)

Pluvious \Plu"vi*ous\, a. [L. pluviosus, pluvius, fr. pluvia
   rain: cf. F. pluvieux. See {Pluvial}, a.]
   Abounding in rain; rainy; pluvial. --Sir T. Browne.

Source : WordNet®

pluvious
     adj : marked by rain; "their vacation turned out to be a series of
           rainy days" [syn: {rainy}, {pluvial}]