pollen tube
noun Botany.
the protoplasmic tube that is extruded from a germinating pollen grain and grows toward the ovule.
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Origin of pollen tube
First recorded in 1825–35
Words nearby pollen tube
poll end, pollen grain, pollen mother cell, pollenosis, pollen sac, pollen tube, pollera, pollero, poll evil, pollex, pollice verso
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
Example sentences from the Web for pollen tube
British Dictionary definitions for pollen tube
pollen tube
noun
a hollow tubular outgrowth that develops from a pollen grain after pollination, grows down the style to the ovule, and conveys male gametes to the egg cell
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 pollen tube
pollen tube
The slender tube that is formed after pollination by division of the tube cell in a pollen grain. The pollen tube penetrates the ovule and releases the male gametes.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.