What is another word for lighter-than-air?
Pronunciation: [lˈa͡ɪtəðɐnˈe͡ə] (IPA) 
"Lighter-than-air" refers to objects that are buoyant in the air due to their low density. Synonyms for this term include "aerostatic," "levitated," and "gas-filled." Other phrases that can be used in place of "lighter-than-air" include "floating," "anti-gravity," and "buoyant." These terms are often used when describing airships, such as blimps and dirigibles, which rely on their lightness to stay afloat in the sky. In contrast, heavier-than-air objects, such as airplanes, depend on lift generated by their wings to remain aloft. Using a synonym for "lighter-than-air" can add variety to your writing and help to avoid repetition.
