aerostatic /ˌeɪəɹə(ʊ)ˈstætɪk/ adjective2 •Of or pertaining to aerostatics; pneumatic.I have very much improved my mechanical combinations, for the navigation of the air and water by hydrostatic and aerostatic forces. — 1828 •Pertaining to aerial navigation or aeronautics. formsmore aerostatic · most aerostatic