from Wiktionary, Creative Commons Attribution/Share-Alike License

  • proper n. A taxonomic genus within the class Trepomonadea — freshwater diplomonad flagellates.
  • n. The human intestinal parasite Giardia lamblia.


from Wiktionary, Creative Commons Attribution/Share-Alike License

Named in honor of Alfred Mathieu Giard (1846-1908), a French biologist.


  • "Giardia is especially common in the Rocky Mountains because of human activity in the watershed."

    Giardiasis: How To Battle Beaver Fever

  • The test revealed infection with a parasite called Giardia lamblia, a condition called giardiasis.

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  • When Leeuwenhoek had looked at his own feces, he had seen a protozoan now called Giardia lamblia, which had made him sick in the first place.

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  • Giardiasis (GEE-are-DYE-uh-sis) is a diarrheal illness caused by a one-celled, microscopic parasite, Giardia intestinalis (also known as Giardia lamblia).


  • In one cell, after I had gotten Giardia, which is a very bad (inaudible), vomiting and diarrhea, the Iraqis wouldn't let me use the bathroom.

    CNN Transcript Mar 23, 2003

  • Giardia duodenalis / Giardia intestinalis, previously known as Giardia lamblia, causing giardiasis, is the most prevalent protozoan parasite worldwide with about 200 million people being currently infected

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  • Others such as Giardia are shed into the environment and humans are infected following environmental exposure such as consuming contaminated water.

    Potential impacts of indirect mechanisms of climate change on human health in the Arctic

  • High levels of faecal pollution were found in the water as well as parasites such as Giardia, which can cause diarrhoea, and

    ANC Daily News Briefing

  • Viral causes and parasites such as Giardia and Cryptospiridium are less common.


  • There remains virtually no river in the U.S. where drinking its water doesn't risk catching Giardia lamblia or some other nasty flagellated protozoan parasite, but here the luminous water is eminently potable.

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