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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Other people are also finding out that doors and windows can’t protect them, as some of the tiniest pollen grains seep in. Umair Irfan, Wired News, 5 Apr. 2025 Analysis of ancient pollen grains from Longtan revealed the climate and environment would have been similar in southwestern China to that of Europe. Katie Hunt, CNN Money, 1 Apr. 2025 These filters are especially good at trapping tiny allergens like errant pollen grains as well as animal dander and dust that might be circulating in your space. Erica Sloan, SELF, 2 Apr. 2025 Additionally, there’s a phenomenon called thunderstorm asthma, where the weather conditions can rupture pollen grains into smaller, more allergenic fragments, triggering asthma attacks. Umair Irfan, Wired News, 5 Apr. 2025 See All Example Sentences for pollen grain

Word History

First Known Use

1835, in the meaning defined above

Time Traveler
The first known use of pollen grain was in 1835

Browse Nearby Words

Cite this Entry

“Pollen grain.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pollen%20grain. Accessed 2 May. 2025.

Kids Definition

pollen grain

noun
: one of the microscopic grains of which pollen is made up

More from Merriam-Webster on pollen grain

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!