pollen grain

noun

Definition of pollen grain

: 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 But there’s more to it than simply looking at leaves and pollen grains under a microscope. Amy Stewart, Washington Post, "By studying a few grains of pollen, she can trace a murderer’s footsteps," 26 Sep. 2019 The solution, weak enough to avoid harming the prized plant, could help dissolve the hard exteriors of pollen grains to aid fertilization. Bradley White, National Geographic, "The story of the world’s loneliest tree," 24 Dec. 2019 Expect conditions around the US to worsen as the weeds’ 1 billion pollen grains per plant (!) percolate around the country. Natasha Frost, Quartz, "Climate change is also terrible for your ragweed allergy," 2 Sep. 2019 Traditionally scientists have used pollen grains from lakebed cores to study past plant communities. Paul Voosen, Science | AAAS, "DNA recovered from Arctic lakes holds clues for our future world," 10 Dec. 2019 Over the last three years, Lyson, Miller and their team have extracted more than 7,000 fossils from the site, including 16 species of mammals, 233 species of plant, and over 37,000 pollen grains. Cathleen O'grady, Ars Technica, "Fossil bonanza paints detailed picture of mammals after dinosaur extinction," 25 Oct. 2019 The team also collected more than 6,000 fossilized leaves and analyzed more than 37,000 pollen grains. New York Times, "Colorado Fossils Show How Mammals Raced to Fill Dinosaurs’ Void," 24 Oct. 2019 Researchers also analyzed thousands of pollen grains to see what plants were alive at various times. Malcolm Ritter, The Denver Post, "Colorado fossil trove shows life’s fast recovery after big extinction," 24 Oct. 2019 Subsequent to that platinum spike, pollen grains indicate a drop in temperature. Francis Thackeray, Quartz Africa, "Scientists now have evidence a large platinum-dense meteorite hit the earth 12,800 years ago," 8 Oct. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'pollen grain.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of pollen grain

1835, in the meaning defined above

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The first known use of pollen grain was in 1835

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Cite this Entry

“Pollen grain.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pollen%20grain. Accessed 26 Jan. 2021.

More from Merriam-Webster on pollen grain

Britannica.com: Encyclopedia article about pollen grain

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