giardiasis
noun
giar·di·a·sis
(ˌ)jē-ˌär-ˈdī-ə-səs 
jē-ər-,
jär-
plural giardiases
(ˌ)jē-ˌär-ˈdī-ə-ˌsēz
jē-ər-,
jär-
: infestation with or disease caused by a giardia
Examples of giardiasis in a Sentence
Recent Examples on the Web
For example, metronidazole is the typical treatment for giardiasis.
—
Bruce Y. Lee, Forbes.com, 29 July 2025
Perhaps the most common is Giardia, which can cause giardiasis, a gastrointestinal disease that triggers diarrhea, stomach cramps, bloating, and gas.
—Julia Ries, Health, 17 June 2025
Oral antibiotics may be used to resolve bacterial infections and parasitic ones like giardiasis.
—Kashif J. Piracha, Verywell Health, 1 Jan. 2025
Water in a stream, river or lake may look clean, but it can still be filled with bacteria, viruses, and parasites that can result in waterborne diseases, such as cryptosporidiosis or giardiasis.
—Jack Irvin, People.com, 30 Sep. 2024
The 46-year-old was diagnosed with giardiasis, an intestinal infection, and was hospitalized for four days while doctors treated his symptoms, drew blood and performed a CT scan.
—Summer Lin, Los Angeles Times, 5 May 2023
Research suggests that failure to adequately wash your hands between pooping and putting your hands in your mouth is likely the most common cause of giardiasis among campers.
—Wes Siler, Outside Online, 13 Aug. 2022
The giardia parasite causes the diarrheal disease giardiasis, per the Centers for Disease Control and Prevention (CDC).
—Korin Miller, Health.com, 15 June 2021
Symptoms of giardiasis include abdominal cramps, vomiting, fever, and diarrhea.
—Discover Magazine, 29 June 2010
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Bruce Y. Lee, Forbes.com, 29 July 2025
Perhaps the most common is Giardia, which can cause giardiasis, a gastrointestinal disease that triggers diarrhea, stomach cramps, bloating, and gas.
—Julia Ries, Health, 17 June 2025
Oral antibiotics may be used to resolve bacterial infections and parasitic ones like giardiasis.
—Kashif J. Piracha, Verywell Health, 1 Jan. 2025
Water in a stream, river or lake may look clean, but it can still be filled with bacteria, viruses, and parasites that can result in waterborne diseases, such as cryptosporidiosis or giardiasis.
—Jack Irvin, People.com, 30 Sep. 2024
The 46-year-old was diagnosed with giardiasis, an intestinal infection, and was hospitalized for four days while doctors treated his symptoms, drew blood and performed a CT scan.
—Summer Lin, Los Angeles Times, 5 May 2023
Research suggests that failure to adequately wash your hands between pooping and putting your hands in your mouth is likely the most common cause of giardiasis among campers.
—Wes Siler, Outside Online, 13 Aug. 2022
The giardia parasite causes the diarrheal disease giardiasis, per the Centers for Disease Control and Prevention (CDC).
—Korin Miller, Health.com, 15 June 2021
Symptoms of giardiasis include abdominal cramps, vomiting, fever, and diarrhea.
—Discover Magazine, 29 June 2010
Cite this Entry
“Giardiasis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/giardiasis. Accessed 3 Nov. 2025.
Copy CitationMedical Definition
giardiasis
noun
giar·di·a·sis
(ˌ)jē-ˌär-ˈdī-ə-səs, ˌjē-ər-, jär-
plural giardiases
-ˌsēz
: infestation with or disease caused by a flagellate protozoan of the genus Giardia (especially G. lamblia) that is often characterized by diarrhea
called also lambliasis
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