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exine

noun
ex·​ine | \ ˈek-ËŒsÄ“n How to pronounce exine (audio) , -ËŒsÄ«n\

Definition of exine

: the outer of the two major layers forming the walls of some spores and especially pollen grains

First Known Use of exine

1839, in the meaning defined above

History and Etymology for exine

International Scientific Vocabulary ex- + in- fibrous tissue, from Greek in-, is tendon

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More from Merriam-Webster on exine

Britannica.com: Encyclopedia article about exine

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