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
Springtime is the worst allergy season for Phoenix residents, but ragweed and other pollen can also make life miserable in the autumn.
—
The Arizona Republic, 22 Sep. 2024
Our top allergens right now are ragweed and elm, per Pollen.com.
—Shafaq Patel, Axios, 18 Sep. 2024
Having an allergy to plants like ragweed, chrysanthemums, and marigolds may increase your risk of an allergic reaction to dandelion tea.
—Isabel Vasquez Rd Ldn, Health, 19 Sep. 2024
Though weed pollination depends on the amount of daylight, fall can still bring allergens like pollen from ragweed.
—Mariyam Muhammad, The Enquirer, 16 Aug. 2024
See all Example Sentences for ragweed 
The Arizona Republic, 22 Sep. 2024
Our top allergens right now are ragweed and elm, per Pollen.com.
—Shafaq Patel, Axios, 18 Sep. 2024
Having an allergy to plants like ragweed, chrysanthemums, and marigolds may increase your risk of an allergic reaction to dandelion tea.
—Isabel Vasquez Rd Ldn, Health, 19 Sep. 2024
Though weed pollination depends on the amount of daylight, fall can still bring allergens like pollen from ragweed.
—Mariyam Muhammad, The Enquirer, 16 Aug. 2024
See all Example Sentences for ragweed
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“Ragweed.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ragweed. Accessed 1 Oct. 2024.
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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