hydrometry

Noun

hy=drom=e=try

WORDNET DICTIONARY

hydrometry(n = noun.act) gravimetry - the measurement of specific gravity; Array

is a kind of measure, measurement, measuring, mensuration

Derived form adjective hydrometric₁

hydrometry, n. [Cf. F. hydromètrique.].

The art of determining the specific gravity of liquids, and thence the strength of spirituous liquors, saline solutions, etc. [1913 Webster]
The art or operation of measuring the velocity or discharge of running water, as in rivers, etc. [1913 Webster]

For further exploring for "hydrometry" in Webster Dictionary Online