Plū'vi-ŏm'e-ter, n.

noun

n. [From Lat. pluvia, rain, and Lat. metrum, Gr. μέτρον, measure; Fr. pluviomètre.] A rain-gauge, an instrument for ascertaining the quantity of water that falls in rain, or in rain and snow, at any place, in a given time; a pluviameter.