Paroxysm

Webster's Practical Dictionary- A Practical Dictionary of the Englih Language · 1884 · p. 297

par'oks-izm, n. (Med.) The fit, attack, or exacerbation of a disease that has decided remi ions or intermi ions. Any sudden and violent action; convulsion; fit. — Paroxys'mal, -izlnal, a. or Marked by, pert, to, or caused by, etc.