from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The outer layer of the wall of a spore or pollen grain. Also called exosporium.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. the outer layer of a pollen grain or spore; the exosporium

from The Century Dictionary and Cyclopedia

  • n. Same as extine.


ex(o)- + Greek īs, īn-, tendon; see wei- in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)


  • Sporodex's exine technology is not currently available for commercial use, but Mackenzie told NutraIngredients. com that multinational companies are currently assessing the technology in their own laboratories, and others are looking at ways to scale up or provide companies with estimates of how much it would cost to produce the pollen on a commercial scale.

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