pollen grain
Americannoun
Etymology
Origin of pollen grain
First recorded in 1825–35
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
In the process of plant reproduction, when a pollen grain that transports male gametes lands on the stigma of another flower, it initiates the formation of a pollen tube.
From Science Daily ● May 21, 2024
Normally, a pollen grain that sticks to the stigma of a flower during pollination germinates into a long tube that grows straight and unbranched through the ovary to the ovules, where fertilisation takes place.
From Science Daily ● Apr. 16, 2024
Each pollen grain contains two cells: one generative cell that will divide into two sperm and a second cell that will become the pollen tube cell.
From Textbooks ● Jan. 1, 2015
Micrograph C shows a blowup of a pollen grain, which is oval with two lobes and resembles Mickey Mouse.
From Textbooks ● Jan. 1, 2015
After the stigma has been supplied with pollen, a single pollen grain sends a threadlike sprout down through the stigma into the ovary.
From Agriculture for Beginners Revised Edition by Charles William Burkett
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
