Embolism :: Embolism (n.) 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..
Embolismical :: Embolismical (a.) Pertaining to embolism or intercalation; intercalated; as, an embolismic year, i. e., the year in which there is intercalation..