Definify.com

Webster 1913 Edition

Adj.

[L.

febris

fever +

ficare

(in comp.) to make. See

-.]

Producing fever.

Dunglison.

Adj.

[L. febris, fever, and facio, to make.] Producing fever; feverish.

febrific ‎(comparative more febrific, superlative most febrific)

James A. H. Murray [et al.], editor (1884–1928) A New English Dictionary on Historical Principles (Oxford English Dictionary), London: Clarendon Press, OCLC 15566697; and The Oxford English Dictionary; being a Corrected Re-issue with an Introduction, Supplement, and Bibliography of A New English Dictionary on Historical Principles (the First Supplement), Oxford: Clarendon Press, 1933, OCLC 2748467.