Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A unit of mass equal to about 0.453592 kilogram, having a weight of one pound-force in a gravitational field of one gee.

Etymologies

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Examples

  • So under common conditions, a pound-mass weighs a pound-force, but when one is out of earth's gravity that equivalence fails.

    Wired Campus 2010

  • On Monday, not only did I lecture on the difference between weight and mass, but I did the whole spiel on the relation between pound-force (lbf), pound-mass (lbm), and slug (this is an engineering class, after all).

    Wired Campus 2010

  • On Monday, not only did I lecture on the difference between weight and mass, but I did the whole spiel on the relation between pound-force (lbf), pound-mass (lbm), and slug (this is an engineering class, after all).

    Wired Campus 2010

  • On Monday, not only did I lecture on the difference between weight and mass, but I did the whole spiel on the relation between pound-force (lbf), pound-mass (lbm), and slug (this is an engineering class, after all).

    Wired Campus 2010

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