aerenchyma

noun
aer·​en·​chy·​ma | \ˌer-ˈeŋ-kə-mə \

Definition of aerenchyma 

: modified parenchymatous tissue having large intracellular air spaces that is found especially in aquatic plants where it facilitates gaseous exchange and maintains buoyancy

First Known Use of aerenchyma

circa 1893, in the meaning defined above

History and Etymology for aerenchyma

aer- + -enchyma, after German Aërenchym

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The first known use of aerenchyma was circa 1893

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Britannica.com: Encyclopedia article about aerenchyma

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