The Collaborative International Dictionary
Aerostatical
Aerostatic \A`["e]r*o*stat"ic\, Aerostatical \A`["e]r*o*stat"ic*al\, a. [A["e]ro- + Gr. ?: cf. F. a['e]rostatique. See Statical, Statics.]
Of or pertaining to a["e]rostatics; pneumatic.
A["e]ronautic; as, an a["e]rostatic voyage.
Wiktionary
aerostatical
a. 1 Of or relating to aerostatics; pneumatic. 2 aeronautic