How to Use pollen grain in a Sentence

pollen grain

noun
  • Cedar tree pollen is very small, and a single tree can produce billions of pollen grains in season.
    — Josh Kelly, Oklahoman, 5 Mar. 2026
  • Note that both a pollen grain and a dust particle can be larger than 5 microns.
    — Jv Chamary, Forbes, 29 May 2021
  • But there’s more to it than simply looking at leaves and pollen grains under a microscope.
    — Amy Stewart, Washington Post, 26 Sep. 2019
  • The greedy system eliminates the competing pollen grains that lack this gene drive.
    — Laura Baisas, Popular Science, 7 Aug. 2024
  • Pollen count means how much pollen is in the air - it is measured by the number of pollen grains in a specific unit of air.
    — Anna Kaufman, USA TODAY, 6 May 2023
  • The movement will dislodge the pollen, and gravity will help at least some pollen grains fall on the stigma.
    — Megan Hughes, Better Homes & Gardens, 18 June 2026
  • The pollen grains can travel hundreds of miles in Oklahoma winds.
    — Josh Kelly, Oklahoman, 5 Mar. 2026
  • Some trees produce larger pollen grains that appear as a fine yellow dust on outdoor surfaces.
    — Sacbee.com, 13 Mar. 2026
  • During the spring, summer and fall, plants release pollen grains to fertilize other plants.
    — Alex Groth, Journal Sentinel, 7 May 2024
  • The flowers look like sleigh bells on a handle, and those flowers, when jingled, spew yellow pollen grains into the air.
    — Lucas Joel, Quartz, 15 Aug. 2019
  • Strong upward winds during storms can lift up pollen grains, which then get dispersed across a wider distance when downdraft winds begin.
    — Dharna Noor, BostonGlobe.com, 8 Mar. 2023
  • Researchers also analyzed thousands of pollen grains to see what plants were alive at various times.
    — Malcolm Ritter, The Denver Post, 24 Oct. 2019
  • 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, Vox, 31 Mar. 2025
  • Each tall green weed can release 1 billion pollen grains and the plant grows extremely well in Virginia.
    — Karri Peifer, Axios, 17 Sep. 2024
  • Bigelow has pulled cores from the bottom of lakes in Western Alaska to find pollen grains and bits of ancient plants.
    — Ned Rozell, Anchorage Daily News, 24 Feb. 2018
  • Insects, usually bees, or a strong breeze will transfer the lightweight pollen grains from anther to stigma.
    — Megan Hughes, Better Homes & Gardens, 18 June 2026
  • Brain health food nutrition concept with fish, vegetables, seeds, pollen grain and herbs on rustic background.
    — Hannah Millington, MSNBC Newsweek, 7 Aug. 2025
  • When pollen grains hatch on the female stigma of a flower, each pollen grain first grows a tube toward the egg, then sends a pair of tailless sperm down the tunnel.
    — Literary Hub, 25 Mar. 2026
  • The majority of the pollen that causes your allergies comes from trees, grasses and weeds, which make small and dry pollen grains that travel in the wind.
    — Alex Groth, Journal Sentinel, 7 May 2024
  • The pollen grains are small enough to be inhaled, and some people’s immune systems react very poorly to the miniscule particles.
    — Rachel Ramirez, CNN, 8 Mar. 2023
  • For example, a single corn plant produces 2 [million] to 5 million pollen grains, and an ear of corn has a few hundred seeds.
    — Brigit Katz, Smithsonian, 10 May 2018
  • So far, the peak daily count was 1,171 pollen grains per cubic meter of air measured in early March.
    — Ian Livingston, Washington Post, 14 Mar. 2024
  • Subsequent to that platinum spike, pollen grains indicate a drop in temperature.
    — Francis Thackeray, Quartz Africa, 8 Oct. 2019
  • To avoid heavy-water effects, the team extracted pollen grains from the same sediment as the White Sands footprints.
    — Jocelyn Solis-Moreira, Popular Science, 5 Oct. 2023
  • Traditionally scientists have used pollen grains from lakebed cores to study past plant communities.
    — Paul Voosen, Science | AAAS, 10 Dec. 2019
  • The researchers determined the ages of pollen grains and tiny quartz crystals in sediments beside the footprints, which are buried a few feet below the surface.
    — Tom Metcalfe, Scientific American, 5 Oct. 2023
  • The wall that covers a pollen grain is quite resistant to temperature changes, helping its preservation for millions of years inside the rocks.
    — Pablo Correa, Discover Magazine, 8 Dec. 2022
  • The lake’s calcite layers became thicker during warm years; pollen grains show how the forest composition shifted to include more heat-loving tree species.
    — Emily Wright, Washington Post, 16 June 2023
  • Following a chemical come-hither signal from the stigma, the pollen grain grows a pollen tube, a tunnel for sperm cells to travel down to reach the egg for fertilization.
    — Perrin Ireland, Discover Magazine, 25 Mar. 2013
  • 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

Some of these examples are programmatically compiled from various online sources to illustrate current usage of the word 'pollen grain.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

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