Embolism /(?)/

Em·bo·lism

Embolism

n.
  1. Intercalation; the insertion of days, months, or years, in an account of time, to produce regularity; as, the embolism of a lunar month in the Greek year.
  2. Intercalated time.
  3. The occlusion of a blood vessel by an embolus. Embolism in the brain often produces sudden unconsciousness and paralysis. (Med.)