Definition of lighter-than-air in English:

lighter-than-air

Line breaks: lighter-than-air

adjective

  • Relating to or denoting a balloon or other aircraft weighing less than the air it displaces, and so flying as a result of its own buoyancy.
    More example sentences
    • The present invention relates generally to the field of lighter-than-air ships and more particularly to a airship that uses hydrogen as a lift gas.
    • Although the days of the Zeppelins have passed, lighter-than-air craft remain in the public eye because of their use in televising sporting events.
    • Before lifting off on your scientific inquiry into ballooning and lighter-than-air flight, it helps to have some background information about the history of ballooning.

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Word of the day astrogation
Pronunciation: ˌastrə(ʊ)ˈgeɪʃ(ə)n
noun
(in science fiction) navigation in outer space