Illustration of ragweed
: any of various chiefly North American weedy composite herbs (genus Ambrosia) that produce highly allergenic pollen
Examples of ragweed in a Sentence
Recent Examples on the Web
Growing up in the South with pollen and ragweed didn't make matters any better.
—
Gaylyn Henderson, Mph, Health, 25 Jan. 2025
The most common culprit for fall allergies is a plant called ragweed, the CDC says, which can release 1 billion grains of pollen per plant.
—Alexandra Banner, CNN, 22 Oct. 2024
September and October are known for ragweed season and pollen from some fall trees.
—Nicole Villalpando, Austin American-Statesman, 5 Dec. 2024
Pollen counts have been high in Houston, largely due to ragweed season.
—Shafaq Patel, Axios, 18 Sep. 2024
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Gaylyn Henderson, Mph, Health, 25 Jan. 2025
The most common culprit for fall allergies is a plant called ragweed, the CDC says, which can release 1 billion grains of pollen per plant.
—Alexandra Banner, CNN, 22 Oct. 2024
September and October are known for ragweed season and pollen from some fall trees.
—Nicole Villalpando, Austin American-Statesman, 5 Dec. 2024
Pollen counts have been high in Houston, largely due to ragweed season.
—Shafaq Patel, Axios, 18 Sep. 2024
See all Example Sentences for ragweed
Dictionary Entries Near ragweed
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“Ragweed.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ragweed. Accessed 19 Feb. 2025.
Copy CitationKids Definition
ragweed
noun
rag·weed
ˈrag-ˌwēd 
: any of various chiefly North American weedy herbs related to the daisies and producing pollen irritating to the eyes and noses of some persons
Medical Definition
ragweed
noun
rag·weed
ˈrag-ˌwēd
: any of various chiefly North American weedy herbaceous plants comprising the genus Ambrosia and producing highly allergenic pollen responsible for much hay fever and asthma: as
a
: an annual weed (A. artemisiifolia) with finely divided foliage that is common on open or cultivated ground in much of North America
b
: a coarse annual (A. trifida) with some or all of the leaves usually deeply and palmately 3-cleft or 5-cleft
called also great ragweed
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