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specific gravity
(redirected from Specific gravities)

    Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia, Hutchinson 0.46 sec.
specific gravity
n. Abbr. sg, sp gr
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.
specific gravity (SG),
n a measurement calculated by dividing the mass of the desired volume of a substance by the mass of an equivalent volume of water. Both measurements must be taken under identical pressure and temperature conditions. Used to determine the presence of impurities within an essential oil. Also used in diagnostic analysis of fluids such as urine.
specific gravity,
n See gravity, specific.
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