lighter-than-air

adjective
ligh·​ter-than-air

Definition of lighter-than-air 

: of less weight than the air displaced

First Known Use of lighter-than-air

1903, in the meaning defined above

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The first known use of lighter-than-air was in 1903

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More Definitions for lighter-than-air

lighter-than-air

adjective

English Language Learners Definition of lighter-than-air

: able to float in the air

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