Embolism \Em"bo*lism\, n. [L. embolismus, from Gr. ? to throw or put in, insert; cf. ? intercalated: cf. F. embolisme. See Emblem.]

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. --Johnson.

3. (Med.) The occlusion of a blood vessel by an embolus. Embolism in the brain often produces sudden unconsciousness and paralysis.

Source: Webster's Revised Unabridged Dictionary (1913)