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giant
giant anteater
giant clam
giant frog
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giant peacock moth
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giardia

gi·ar·di·a [ jee rdee ə, jrdee ə ]


noun 
Definition:
 
1. parasitic organism: a single-celled protozoan, some forms of which live as parasites in the gut of humans and other vertebrates, causing an infection giardiasis. Genus Giardia.

2. med 
Same as  giardiasis


[Early 20th century. < modern Latin, after A. Giard (1846-1908), French biologist]
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