HYDROSTATICS
hydrostatics
(noun) study of the mechanical properties of fluids that are not in motion
Source: WordNet® 3.1
Etymology
Noun
hydrostatics (uncountable)
(physics) The scientific study of fluids at rest, especially when under pressure.
Source: Wiktionary
Hy`dro*stat"ics, n. Etym: [Cf. F. hydrostatique.] (Physics)
Definition: The branch of science which relates to the pressure and
equilibrium of nonelastic fluids, as water, mercury, etc.; the
principles of statics applied to water and other liquids.
Source: Webster’s Unabridged Dictionary 1913 Edition