Wiktionary
alt. (context mathematics physics English) A point, near, or within a body at which the object's mass can be assumed to be concentrated; it coincides with the centroid for a body of uniform density, and with the centre of gravity in a uniform gravitational field. n. (context mathematics physics English) A point, near, or within a body at which the object's mass can be assumed to be concentrated; it coincides with the centroid for a body of uniform density, and with the centre of gravity in a uniform gravitational field.
WordNet
n. point representing the mean position of the matter in a body [syn: center of mass]
Usage examples of "centre of mass".
Discovery might not be able to correct for the off-centre of mass, now that it was carrying a thousand tons piggyback.
But all the calculations about rotation, centre of mass, and thrust vectors would have to be redone, and radioed back to Mars for checking.
Henry learned how to brace himself, to get the reaction he needed, and to judge the centre of mass of a complex object, to learn to shove and control without sending it rolling.
The vertical lurched around him as his inner ear sought the way to the centre of mass of the Sugar Lump.