Giardia giantship • giardia · · · Info · Definitions · Characters · · Giardia · · Text Latin · · Script 7 · · Length Definitions · · · (noun) a suspected cause of diarrhea in humans. Synonyms: giardia. · · Noun Definition 1 Characters · · G latin capital letter g U+0047 a latin small letter a U+0061 d latin small letter d U+0064 i latin small letter i U+0069 r latin small letter r U+0072