a disease caused by filarial worms transmitted by mosquitoes: the worms invade lymphatic vessels and lymphoid tissue, causing chronic swelling of the lower extremities and other parts of the body
See filariasis in American Heritage Dictionary 4
(fĭlˌə-rīˈə-sĭs)
nounpl.fil·a·ri·a·ses(-sēzˌ)
Disease caused by infestation of tissue with filariae.