Malarial \Ma*la"ri*al\, Malarian \Ma*la"ri*an\, Malarious \Ma*la"ri*ous\, a. Of or pertaining, to or infected by, malaria.

Malarial fever (Med.), a fever produced by malaria, and characterized by the occurrence of chills, fever, and sweating in distinct paroxysms, At intervals of definite and often uniform duration, in which these symptoms are wholly absent (intermittent fever), or only partially so (remittent fever); fever and ague; chills and fever.

Source: Webster's Revised Unabridged Dictionary (1913)