Definitions
from The Century Dictionary.
- noun In botany, the outer coat of the pollengrain or of a spore. Also
exine .
from the GNU version of the Collaborative International Dictionary of English.
- noun (bot.) The outer membrane of the grains of pollen of flowering plants.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun botany The
outer membrane of thegrains ofpollen offlowering plants .
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
Latin exter on the outside. Compare intine.
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Examples
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a double wall, a thin delicate wall of unaltered cellulose, the endospore or intine, and a tough outer cuticularized exospore or extine.
Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1 Various
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