ma ‧ lar ‧ i ‧ a /məˈleəriə $ -ˈler-/ BrE AmE noun [uncountable]
[ Date: 1700-1800 ; Language: Italian ; Origin: mala aria 'bad air' ; because it was believed that the disease came from gases rising from wet land ]
a disease that is common in hot countries and that you get when a type of ↑ mosquito bites you
—malarial adjective :
malarial fever