Main Entry:

bo·lus

Pronunciation:

\ˈbō-ləs\

Function:

noun

Inflected Form(s):

plural bo·lus·es

Etymology:

Late Latin, from Greek bōlos lump

Date:

1562

1: a rounded mass: as a: a large pill b: a soft mass of chewed food 2 a: a dose of a substance (as a drug) given intravenously b: a large dose of a substance given by injection for the purpose of rapidly achieving the needed therapeutic concentration in the bloodstream