giardiasis
Concise Oxford English Dictionary © 2008 Oxford University Press:
giardiasis /ˌdʒɪɑːˈdʌɪəsɪs/
▶noun infection of the intestine with a flagellate protozoan.
– origin early 20th cent.: from mod. L. Giardia (from the name of the French biologist Alfred M. Giard) + -asis.
'giardiasis' also found in these Oxford entries:

