Quick definitions from WordNet (heavier-than-air)
▸ adjective: relating to an aircraft heavier than the air it displaces
▸ Words similar to heavier-than-air
▸ Usage examples for heavier-than-air
▸ Popular nouns described by heavier-than-air
▸ Words that often appear near heavier-than-air
▸ Rhymes of heavier-than-air
▸ Invented words related to heavier-than-air
▸ adjective: relating to an aircraft heavier than the air it displaces
▸ Words similar to heavier-than-air
▸ Usage examples for heavier-than-air
▸ Popular nouns described by heavier-than-air
▸ Words that often appear near heavier-than-air
▸ Rhymes of heavier-than-air
▸ Invented words related to heavier-than-air