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

To pollinate and produce a watermelon, a bee must visit multiple times3 to transfer 500 or more pollen grains! —Arricca Elin Sansone, Southern Living, 22 May 2026

Rather, the preponderance of limited evidence suggests those traces of pollen grains in honey might more often act as antigens, triggering an allergic reaction in sensitive individuals or even the development of new allergies. —Scott Lafee, San Diego Union-Tribune, 19 May 2026

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

Some trees produce larger pollen grains that appear as a fine yellow dust on outdoor surfaces. —Sacbee.com, 13 Mar. 2026

Word History

First Known Use

1835, in the meaning defined above

Rhymes for pollen grain

• aeroplane
• appertain
• ascertain
• capitaine
• cassegrain
• cellophane
• chatelaine
• counterpane
• entertain
• halothane
• hurricane
• hyperplane

Kids Definition

pollen grain

noun

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