from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The ratio of the mass of a solid or liquid to the mass of an equal volume of distilled water at 4°C (39°F) or of a gas to an equal volume of air or hydrogen under prescribed conditions of temperature and pressure. Also called relative density.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The ratio of the mass of a substance to that of an equal volume of water at 4°C (or to some other reference substance)
from the GNU version of the Collaborative International Dictionary of English
- adj. See under Gravity.
- n. the ratio of the weight of a body to the weight of an equal volume of some other body taken as the standard or unit. This standard is usually water for solids and liquids, and air for gases. Thus, 19, the specific gravity of gold, expresses the fact that, bulk for bulk, gold is nineteen times as heavy as water.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the density of a substance relative to the density of water
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