Definition of giardia
: any of a genus (Giardia) of flagellate protozoans inhabiting the intestines of various mammals and including one (G. lamblia synonym G. intestinalis) that is associated with diarrhea in humans
Recent Examples of giardia from the Web
About 5 of every 100,000 Californians contract a giardia infection each year, according to the most recent surveillance report from the California Department of Public Health.
Wilderness water can contain disease-causing agents such as giardia, E. coli and salmonella.
Water systems must test for and treat harmful waterborne pathogens such as giardia and cryptosporidium parasites that can cause intestinal distress.
In Sweden, lakes and streams previously used for drinking water are now contaminated with the parasite that causes giardia, the human intestinal illness.
Lab results showed dogs that visit dog parks were more likely to test positive for two common parasites (giardia and cryptosporidium) than non-dog park-attending dogs.
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Origin and Etymology of giardia
New Latin, from Alfred M. Giard †1908 French biologist
First Known Use: 1918See Words from the same year
Medical Definition of giardia
1 capitalized : a genus of flagellate protozoans inhabiting the intestines of various mammals and including one (G. lamblia synonym G. intestinalis) that is associated with diarrhea in humans
2: any flagellate of the genus Giardia
Biographical Note for giardia
Giard \zhē-är\play ,
Alfred Mathieu (1846–1908), French biologist. Giard was an all-around naturalist. He was a student of morphology, phylogeny, and ethology and a supporter of both Darwinism and Lamarckism. He investigated a wide range of topics in biology, including regeneration, sexuality, metamorphosis, experimental parthenogenesis, hybridization, autotomy, and mimicry. The genus Giardia was named in his honor in 1882 by Johann Kunstler.
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