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Medical Dictionary

bolus

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noun bo·lus \ˈbō-ləs\

Medical Definition of bolus

plural boluses

  1. 1:  a rounded mass: asa:  a large pillb:  a soft mass of chewed food

  2. 2a:  a dose of a substance (as a drug) given intravenouslyb:  a large dose of a substance given by injection for the purpose of rapidly achieving the needed therapeutic concentration in the bloodstream <the patient receives a bolus dose to reach the minimum effective analgesic concentration—J. F. Camp> <subcutaneous injection of a premeal bolus of fast-acting insulin>





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