very sharp or violent; very acute
• (a.) Very sharp; very violent; as, a peracute fever.
Very acute; said of a disease. ... Origin: L. Peracutus, very sharply ... (05 Mar 2000) ... 
(per″ә-kūt´) very acute.
Per`a·cute' adjective [ Latin peracutus . See Per- , and Acute .] Very sharp; very violent; as, a peracute fever. [ R.] Harvey. 
Type: Term Pronunciation: per′ă-kyūt Definitions: 1. Very acute; said of a disease.
Of extremely rapid onset.
peracute Very acute, said of a disease.