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exine

[ ek-seen, -sahyn ]

noun

, Botany.
  1. the outer coat of a spore, especially a pollen grain.


exine

/ ˈɛkstɪn, -tiːn, -taɪn; ˈɛksɪn, -aɪn /

noun

  1. See intine
    botany the outermost coat of a pollen grain or a spore Compare intine


exine

/ ĕksēn′,-sīn′ /

  1. The outer layer of the wall of a pollen grain. The exine is composed of the most durable organic polymer known, sporopollenin.
  2. Also called extine


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Word History and Origins

Origin of exine1

First recorded in 1880–85; ex- 1 + -ine 1

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eximiousex int.