hay fever
noun
: an acute allergic reaction to pollen that is usually seasonal and is marked by sneezing, nasal discharge and congestion, and itching and watering of the eyes
called also pollinosis
Examples of hay fever in a Sentence
Recent Examples on the Web
Spring is often seen as the peak of allergy season, but fall is also a common time of year to suffer from hay fever.
—
Maggie Horton, People.com, 3 Sep. 2025
The active ingredient in a common over-the-counter allergy spray may do more than ease hay fever symptoms.
—New Atlas, 2 Sep. 2025
One hundred years to the month had passed since a 23-year-old postdoc named Werner Heisenberg was driven by a case of hay fever to Helgoland, a barren, windswept island in the North Sea.
—Quanta Magazine, 8 Aug. 2025
Seasonal allergies, also known as hay fever or allergic rhinitis, happen when your child’s immune system overreacts to allergens like pollen from trees, grasses, and weeds, and in Southern California can be seen almost year-round.
—Advertorial, Oc Register, 7 Aug. 2025
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Maggie Horton, People.com, 3 Sep. 2025
The active ingredient in a common over-the-counter allergy spray may do more than ease hay fever symptoms.
—New Atlas, 2 Sep. 2025
One hundred years to the month had passed since a 23-year-old postdoc named Werner Heisenberg was driven by a case of hay fever to Helgoland, a barren, windswept island in the North Sea.
—Quanta Magazine, 8 Aug. 2025
Seasonal allergies, also known as hay fever or allergic rhinitis, happen when your child’s immune system overreacts to allergens like pollen from trees, grasses, and weeds, and in Southern California can be seen almost year-round.
—Advertorial, Oc Register, 7 Aug. 2025
See All Example Sentences for hay fever
Cite this Entry
“Hay fever.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hay%20fever. Accessed 9 Sep. 2025.
Copy CitationMedical Definition
hay fever
noun
: an acute allergic reaction to pollen that is usually seasonal and is marked by sneezing, nasal discharge and congestion, and itching and watering of the eyes
called also pollinosis
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