weight

Pronunciation: wāt

Definition:

1. In scientific usage, the product of the force of gravity, defined internationally as 9.80665 m/s2, times the mass of the body.
2. In common usage, the apparent mass of a body when measured in air by comparison to standard masses of prescribed composition, the effects of the buoyancy of air being ignored.
3. A piece of material, usually metal, of known mass, used as a comparison object in weighing.
4. In statistics, a procedure to assign differential importance to certain observations at the expense of others, or a numerical factor employed in applying such a procedure.

[A.S. gewiht]

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