What is another word for "gaseity"?

Roget's Thesaurus (1911) lists these synonyms for "gaseity": aeration, aerial, aerification, aeriform, aerodynamics, aerostatics, air, airy, alkali, ammonia, ammoniacal, bladder, blood, chyle, cloud, condense, diffuse, effluvium, elastic, emit, essence, ether, ethereal, evanesce, evaporable, evaporate, fish, flatulence, flatulency, flatulent, flatus, flow, flowing, fluent, fluid, fluidity, fume, gas, gaseous, gasify.