exine

[ ek-seen, -sahyn ]

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

Origin of exine

1
First recorded in 1880–85; ex-1 + -ine1

Words Nearby exine

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British Dictionary definitions for exine

exine

extine (ˈɛkstɪn, -tiːn, -taɪn)

/ (ˈɛksɪn, -aɪn) /


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

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for exine

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. Also called extine

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