heav·​i·​er-than-air ˈhe-vē-ər-ṯẖən-ˈer How to pronounce heavier-than-air (audio)
: of greater weight than the air displaced

Word History

First Known Use

1903, in the meaning defined above

Time Traveler
The first known use of heavier-than-air was in 1903

Dictionary Entries Near heavier-than-air

Cite this Entry

“Heavier-than-air.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heavier-than-air. Accessed 25 Apr. 2024.

Kids Definition


: of greater weight than the air that would occupy the same amount of space
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