ma·lar·i·al I. \məˈlerēəl, -la(a)r-, -lār-\adjective alsoma·lar·i·an\-rēən\ Etymology:malaria + -al or -an : of, relating to, infected by, or resembling malaria < malarial fever > < malarial conditions in areas newly occupied by troops — Atlantic > II. noun (-s) : one infected with malaria