What is the meaning of Extine?

(n.) The outer membrane of the grains of pollen of flowering plants.
Webster's Revised Unabridged Dictionary
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APAWebster's. (2011). Extine. Retrieved September 22, 2026, from http://smartdefine.org/extine/definitions/2006380
ChicagoWebster's. 2011. "Extine" http://smartdefine.org/extine/definitions/2006380 (accessed September 22, 2026).
HarvardWebster's 2011, Extine, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/extine/definitions/2006380>.
MLAWebster's. "Extine" 27 May 2011. Web. 22 September 2026. <http://smartdefine.org/extine/definitions/2006380>