mass
n 1 : the property of a body that is a measure of its inertia, that is commonly taken as a measure of the amount of material it contains, that causes it to have weight in a gravitational field, and that along with length and time constitutes one of the fundamental quantities on which all physical measurements are based 2 : a homogeneous pasty mixture compounded for making pills, lozenges, and plasters <blue > .
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