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exine
(redirected from exines)

    Also found in: Encyclopedia 0.04 sec.
ex·ine  (ksn, -sn)
n.
The outer layer of the wall of a spore or pollen grain. Also called exosporium.
[ex(o)- + Greek s, n-, tendon; see wei- in Indo-European roots.]
exine [ˈɛksɪn, -aɪn], extine [ˈɛkstɪn, -tiːn, -taɪn]
n
(Life Sciences & Allied Applications / Botany) Botany the outermost coat of a pollen grain or a spore Compare intine
exine  (ksn, -sn)
The outer layer of the wall of a pollen grain. The exine is composed of the most durable organic polymer known, sporopollenin. Also called extine.


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