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

Preserved pollen grains and other spores told them about the diversity of plant life in the refugium, something like an oasis where there is food and water available, and environmental conditions are moderate enough to keep organisms surviving through natural disasters and other adverse conditions. —Elizabeth Rayne, Ars Technica, 18 Mar. 2025

While each plant only lives for one season, one plant can produce up to 1 billion pollen grains, which can be carried far by the wind, according to the U.S. Environmental Protection Agency. ▪ Mold. —Michelle Marchante, Miami Herald, 12 Mar. 2025

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, JSTOR Daily, 23 Jan. 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

Word History

First Known Use

1835, in the meaning defined above

Rhymes for pollen grain

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

Kids Definition

pollen grain

noun

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