n.
Pronunciation: j ē - ' är-d ē - ə , ' jär-
Function: noun
Etymology: New Latin, from Alfred M. Giard † 1908 French biologist
Date: 1918
: any of a genus ( Giardia ) of flagellate protozoans inhabiting the intestines of various mammals and including one ( G. lamblia syn. G. intestinalis) that is associated with diarrhea in humans