mononucleosis
noun
mono·nu·cle·o·sis
ˌmä-nə-ˌnü-klē-ˈō-səs 
-ˌnyü-
: an abnormal increase of mononuclear white blood cells in the blood
specifically
: infectious mononucleosis
Examples of mononucleosis in a Sentence
Recent Examples on the Web
Skin rashes, sudden allergies, hypersensitivity, and re-emerging latent viruses like the kind that cause mononucleosis and herpes are common among space crews.
—
Lauren Leffer, Popular Science, 27 Feb. 2025
Like people with long Covid, those with post-vaccination syndrome showed reactivation of Epstein-Barr virus, a virus that may lie dormant in the body and is linked to mononucleosis, multiple sclerosis and other conditions.
—Apoorva Mandavilli, New York Times, 19 Feb. 2025
Hall, one of four returners, contracted mononucleosis in the preseason.
—Brian Hamilton, The Athletic, 14 Feb. 2025
Schaefer’s start to his 2024-25 OHL season was delayed until late October due to a bout with mononucleosis.
—Carol Schram, Forbes, 14 Jan. 2025
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Lauren Leffer, Popular Science, 27 Feb. 2025
Like people with long Covid, those with post-vaccination syndrome showed reactivation of Epstein-Barr virus, a virus that may lie dormant in the body and is linked to mononucleosis, multiple sclerosis and other conditions.
—Apoorva Mandavilli, New York Times, 19 Feb. 2025
Hall, one of four returners, contracted mononucleosis in the preseason.
—Brian Hamilton, The Athletic, 14 Feb. 2025
Schaefer’s start to his 2024-25 OHL season was delayed until late October due to a bout with mononucleosis.
—Carol Schram, Forbes, 14 Jan. 2025
See All Example Sentences for mononucleosis
Cite this Entry
“Mononucleosis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mononucleosis. Accessed 14 Mar. 2025.
Copy CitationMedical Definition
mononucleosis
noun
mono·nu·cle·o·sis
-ˌn(y)ü-klē-ˈō-səs
: an abnormal increase of mononuclear white blood cells in the blood
specifically
: infectious mononucleosis
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