specific gravity

views updated May 08 2018

specific gravity (sp. gr.) The ratio of the weight of a substance to the weight of an equal volume of water, expressed as a number. For example, the weight of a given volume of quartz, with a specific gravity of 2.65, is 2.65 times that of the same volume of water. The average sp. gr. of metallic minerals is about 5. See also DENSITY.

A Dictionary of Earth Sciences AILSA ALLABY and MICHAEL ALLABY

specific gravity

views updated May 18 2018

specific gravity (grav-iti) n. see relative density.

A Dictionary of Nursing

specific gravity

views updated May 18 2018

specific gravity (sp. gr.) See relative density (r.d.)

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specific gravity

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