lighter–than–air

adjective ligh·ter–than–air

Definition of lighter–than–air

  1. :  of less weight than the air displaced

First Known Use of lighter–than–air

1903


LIGHTER–THAN–AIR Defined for English Language Learners

lighter-than-air

adjective

Definition of lighter–than–air for English Language Learners

  • : able to float in the air

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