The branch of mechanics that deals with the mechanical properties of gases.

Roget 334: gaseity^†; vaporousness etc. adj.; flatulence, flatulency; volatility; aeration, aerification.    elastic fluid, gas, air, vapor, ether, steam, essence, fume, reek, effluvium, flatus; cloud etc. 353; ammonia, ammoniacal gas^†; volatile alkali; vacuum, partial vacuum.    [Science of elastic fluids] pneumatics, pneumatostatics^†; aerostatics^†, aerodynamics.    gasmeter^†, gasometer^†; air bladder, swimming bladder, sound, (of a fish). ... show more

Roget 338: air etc. (gas) 334; common air, atmospheric air; atmosphere; aerosphere^†.    open air; sky, welkin; blue sky; cloud etc. 353.    weather, climate, rise and fall of the barometer, isobar.    [Science of air] aerology, aerometry^†, aeroscopy^†, aeroscopy^†, aerography^†; meteorology, climatology; pneumatics; eudioscope^†, baroscope^†, aeroscope^†, eudiometer^†, barometer, aerometer^†; aneroid, baroscope^†; weather gauge, weather glass, weather cock.    exposure to the air, exposure to the weather; ventilation; aerostation^†, aeronautics, aeronaut.    ... show more

Polish: pneumatyka