# specific gravity

[ spi-sif-ik grav-i-tee ]

## noun

, Physics.
1. the ratio of the density of any substance to the density of some other substance taken as standard, water being the standard for liquids and solids, and hydrogen or air being the standard for gases.

specific gravity

## noun

1. the ratio of the density of a substance to that of water See relative density
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

specific gravity

/ spĭ-sĭfĭk /

1. The relative density of a solid or liquid, usually when measured at a temperature of 20°C, compared with the maximum density of water (at 4°C). For example, the specific gravity of carbon steel is 7.8, that of lead is 11.34, and that of pure gold is 19.32.

specific gravity

1. The mass of a substance, given as a multiple of the mass of the same volume of a standard substance (usually water). The specific gravity of aluminum is 2.70; hence, a cubic foot of aluminum weighs 2.70 times as much as a cubic foot of water.

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## Word History and Origins

Origin of specific gravity1

First recorded in 1660–70; the variant relative density was first recorded in 1875–80
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## Example Sentences

That’s why her closest relationship is with Briar, who loves her with a deep and specific gravity.

From Vox

The specific gravity is most conveniently estimated by means of the urinometer—Squibb's is preferable (Fig. 14).

One frequently wishes to ascertain the specific gravity of quantities of fluid too small to float an urinometer.

The specific gravity method is very useful when special instruments are not at hand.

The Specific Gravity is the relative weight of a body compared to an equal bulk of some other body taken as a standard.

With normal specific gravity the proteid is high when the fat is high, and vice vers.