book lung

noun

Definition of book lung

: a saccular breathing organ in many arachnids containing thin folds of membrane arranged like the leaves of a book

First Known Use of book lung

1881, in the meaning defined above

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Time Traveler for book lung

Time Traveler

The first known use of book lung was in 1881

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Cite this Entry

“Book lung.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/book%20lung. Accessed 2 Dec. 2020.

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More Definitions for book lung

book lung

noun
\ ˈbu̇k- How to pronounce book lung (audio) \

Medical Definition of book lung

: a saccular breathing organ in many arachnids containing thin folds of membrane arranged like the leaves of a book

More from Merriam-Webster on book lung

Britannica.com: Encyclopedia article about book lung

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