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.
the ratio of the density of a substance to that of water See relative density
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.
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 definition
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.
noun, Physics. 1. the number of calories required to raise the temperature of 1 gram of a substance 1°C, or the number of BTU’s per pound per degree F. 2. (originally) the ratio of the thermal capacity of a substance to that of standard material. specific heat See under heat capacity. specific heat definition The […]
- Specific heat capacity
noun 1. the heat required to raise unit mass of a substance by unit temperature interval under specified conditions, such as constant pressure: usually measured in joules per kelvin per kilogram ((for constant pressure)) cp Also called specific heat
noun 1. the ratio of the mass of water vapor in air to the total mass of the mixture of air and water vapor. specific humidity noun 1. the mass of water vapour in a sample of moist air divided by the mass of the sample
adjective speccier, specciest 1. (slang) wearing spectacles