aeri Flying start? Aviation prefix Atmospheric prefix Prefix with form Gaseous: Pref Prefix meaning "gas" Atmosphere: Pref Prefix meaning "gas" (var.) Prefix meaning ''gas'' (Var.) Gaseous: Prefix Ethereal: Prefix Gas: Prefix Prefix with -form Air: Comb. form Air: Prefix Gas: Comb. form Atmosphere: Comb. form Prefix for form Atmosphere: Prefix