intine

[in-teen, -tahyn]
noun Botany.
the inner coat of a spore, especially a pollen grain.

Origin:
1825–35; < Latin int(us) within + -ine2

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intine (ˈɪntɪn, -tiːn, -taɪn)
 
n
Compare exine the inner wall of a pollen grain or a spore
 
[C19: from Latin intimus innermost + -ine1]

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Example sentences
The mature pollen wall is composed of two layers, an outer exine and an inner intine.
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