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- n. a point, near or within a body, through which its weight can be assumed to act when considering forces on the body and its motion under gravity. This coincides with the centre of mass in a uniform gravitational field
- n. any pivotal or central idea or group.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the point within something at which gravity can be considered to act; in uniform gravity it is equal to the center of mass
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