[ad. F. udomètre, f. L. ūdus wet, damp: see -METER.] A rain-gauge.
1825. Reg. Arts & Sci., III. 142. An improved Udometer, to shew the quantity of Rain fallen.
1873. Routledge’s Young Gentl. Mag., Feb., 162/1. His thermometers,… hygrometers, and udometers.
Hence Udometric a. [F. udométrique.]
1891. Cent. Dict.
