: the outer of the two major layers forming the walls of some spores and especially pollen grains
Word History
Etymology
International Scientific Vocabulary ex- + in- fibrous tissue, from Greek in-, is tendon
First Known Use
1839, in the meaning defined above
Dictionary Entries Near exine
Cite this Entry
“Exine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/exine. Accessed 1 Oct. 2023.
Copy Citation
More from Merriam-Webster on exine
Britannica.com: Encyclopedia article about exine
Love words? Need even more definitions?
Merriam-Webster unabridged
Share