air equivalent

noun

: the absorbency of a layer of material in terms of the thickness of a layer of air that would have the same absorbency for the same radiation

Word History

First Known Use

1908, in the meaning defined above

Time Traveler
The first known use of air equivalent was in 1908

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Dictionary Entries Near air equivalent

air entrainment

air equivalent

airer

See More Nearby Entries 

Cite this Entry

“Air equivalent.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/air%20equivalent. Accessed 29 Nov. 2024.

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