heavier-than-air

adjective

Weighing more than the volume of air which it displaces.

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Meanings

adjectiveheavier-than-air (comparative form only)
  1. comparative onlyWeighing more than the volume of air which it displaces.

    And folks laughed at Santos Dumont, at the Wrights, and at all the other fellows, who said they could take a heavier-than-air machine, and skim above the clouds like a bird.

    1914, Victor Appleton, chapter 1, in Tom Swift And His Photo Telephone
  2. comparative onlyOf, pertaining to, or using an aircraft which weighs more than the volume of air it displaces.

    Died. John Thomas Moore, 65, who, on a windy day in December 1903, lent a hand putting a flying machine on a runway, was the last surviving witness to the Wright brothers' historic first heavier-than-air flight at Kitty Hawk.

    1952 March 10, “Milestones”, in Time

Synonyms & antonyms

adjectiverelating to an aircraft heavier than the air it displaces

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Also see

Synonym sets from Open English WordNet, CC BY 4.0.

Cite this entry
APA

heavier-than-air. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/heavier-than-air

MLA

“heavier-than-air.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/heavier-than-air. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “heavier-than-air,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/heavier-than-air.

Source: heavier-than-air on Wiktionary, CC BY-SA 4.0.