A sudden outburst of emotion or action: a paroxysm of laughter.
A sudden attack, recurrence, or intensification of a disease.
A spasm or fit; a convulsion.
[Middle English paroxism, periodic attack of a disease, from Medieval Latin paroxysmus, from Greek paroxusmos, from paroxūnein, to stimulate, irritate : para-, intensive pref.; see para-1 + oxūnein, to goad, sharpen (from oxus, sharp; see ak- in Indo-European roots).] par'ox·ys'mal (-ək-sĭz'məl) adj., par'ox·ys'mal·ly adv.
"sudden attack, convulsion," 1577, from M.Fr. paroxysme (16c.), earlier paroxime (13c.), from M.L. paroxysmus "irritation, fit of a disease," from Gk. paroxysmos, from paroxynein "to irritate, goad," from para- "beyond" + oxynein "sharpen, goad," from oxys "sharp, pointed" (see acrid). Non-medical sense first attested 1604.
Main Entry: par·ox·ysm Pronunciation: 'par-&k-"siz-&m also p&-'räk- Function: noun 1: a sudden attack or spasm(as of a disease) 2: a sudden recurrence of symptoms or an intensification of existing symptoms paroxysms —TherapeuticNotes>