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pollen grain
noun
: one of the granular microspores that occur in pollen and give rise to the male gametophyte of a seed plant
Examples of pollen grain in a Sentence
Recent Examples on the Web
There, researchers isolated the pollen grains attached to the butterflies’ bodies and sequenced a particular stretch of the pollen DNA that offers a unique signature for each plant species, a process known as metabarcoding.
—Saugat Bolakhe, Smithsonian Magazine, 27 Nov. 2024
Each tall green weed can release 1 billion pollen grains and the plant grows extremely well in Virginia.
—Karri Peifer, Axios, 17 Sep. 2024
The greedy system eliminates the competing pollen grains that lack this gene drive.
—Laura Baisas, Popular Science, 7 Aug. 2024
In computer simulations, their average charge was strong enough to lift 100 pollen grains at least six millimeters in less than a second.
—Will Sullivan, Smithsonian Magazine, 2 Aug. 2024
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Word History
First Known Use
1835, in the meaning defined above
Dictionary Entries Near pollen grain
Cite this Entry
“Pollen grain.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pollen%20grain. Accessed 21 Dec. 2024.
Kids Definition
pollen grain
noun
: one of the microscopic grains of which pollen is made up
More from Merriam-Webster on pollen grain
Britannica.com: Encyclopedia article about pollen grain
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