Pertaining to aerial navigation or aeronautics.(adjective)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "aerostatic" in a sentence
"The Leviathan was “aerostatic,” Service-speak for being the same density as the air around it."
"Tomás Aguilar was a classmate who devoted his free time and his talent to the invention of wonderfully ingenious contraptions of dubious practicality, like the aerostatic dart or the dynamo spinning top."
"The production of this gas is easy, and it has given the greatest satisfaction hitherto in aerostatic experiments."