
Fulminant ˈfu̇l-mə-nənt, ˈfəl- is any event or process that occurs suddenly and quickly, and is intense and severe to the point of lethality, i.e., it has an explosive character. The word comes from Latin fulmināre, to strike with lightning. It is most frequently used in medicine, and there are several diseases described by this adjective.....
Found on http://en.wikipedia.org/wiki/Fulminant

[
adj] - sudden and severe
Found on http://www.webdictionary.co.uk/definition.php?query=fulminant

• (a.) Thundering; fulminating.
Found on http://thinkexist.com/dictionary/meaning/fulminant/
adjective sudden and severe; `fulminant pain`; `fulminant fever`
Found on https://www.encyclo.co.uk/local/20974
Ful'mi·nant adjective [ Latin
fulminans ,
present participle of
fulminare to lighten: confer French
fulminant .] Thundering; fulminating. [ R.]
Bailey. Found on http://www.encyclo.co.uk/webster/F/85

an unusually severe or aggressive form of a disease.
Found on http://www.encyclo.co.uk/local/22225

describes a disorder that begins suddenly and worsens quickly
Found on http://www.medichecks.com/glossary.cfm?ltr=F

Occurring suddenly with great intensity
Found on http://www.dwp.gov.uk/medical/med_conditions/glossary.html

Occurring suddenly, with lightning-like rapidity, and with great intensity or severity; applied to certain pains, e.g., those of tabes dorsalis. ... Compare: fulgurant. ... Origin: L. Fulmino, pp. -atus, to hurl lightning, fr. Fulmen, lightning ... (05 Mar 2000) ...
Found on http://www.encyclo.co.uk/local/20973

Sudden and intense.
Found on http://www.thehorse.com/Glossary.xhtml?L=F

Type: Term Pronunciation: ful′mi-nănt Definitions: 1. Occurring suddenly, with lightninglike rapidity, and with great intensity or severity (meningococcal meningitis).
Found on http://www.medilexicon.com/medicaldictionary.php?t=35677
No exact match found