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Multi-word Results
| center of gravity |
that point in or near a body or mass about which all of its parts are in perfect balance. |
| specific gravity |
the ratio of the weight or mass of a given substance to that of a standard, which for solids and liquids is water and for gases is hydrogen or air. |
| zero gravity |
the condition of apparent weightlessness, as of a body in orbit, when the apparent effect of gravity is zero. |
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