The ratio of the weight of a given volume of a substance in a vacuum at a given temperature to the weight of an equal volume of water in a vacuum at a given temperature. 
The ratio of the weight of a given volume of a substance in a vacuum at a given temperature to the weight of an equal volume of water in a vacuum at a given temperature. 
Related Terms 

RELATIVE LIQUID DENSITYThe mass of a liquid at a given temperature compared with the mass of an equal volume of fresh water at the same temperature or at a different given temperature. 
SPECIFIC GRAVITYThe ratio of the density of a liquid at a given temperature to the density of fresh water at a standard temperature. 
BULK MODULUS OF ELASTICITYThe ratio of the compressive or tensile force applied to a substance per unit surface area to the change in volume of the substance per unit volume. Also known as bulk modulus; compression modulus; hydrostatic modulus; modulus of compression; modulus of volume elasticity. 
COOLING METHODA method of determining the specific heat of a liquid in which the times taken by the liquid and an equal volume of water in an identical vessel to cool through the same range of temperature are compared. 
SPECIFIC GRAVITYThe ratio of the weight of a unit volume of a material to the weight of the same unit volume of water. 
DISPLACEMENT AS A WEIGHT() This is the weight of water displaced by the ship and equals the volume displaced multiplied by a constant representing the density of water, i.e 
DENSITYThe mass per unit volume of a substance at specified conditions of temperature and pressure. 
ANOMALOUS EXPANSIONAn increase in the volume of a substance that results from a decrease in its temperature, such as is displayed by water at temperatures between 0 and 4 C (32 and 39 F). 
BULK FACTORThe ratio of the volume of loose powdered or granulated solids to the volume of an equal weight of the material after consolidation into a voidless solid. 
WATERINLIQUID RATIO (WLR)The water volume flow rate, relative to the total liquid volume flow rate (oil and water), at the pressure and temperature prevailing in that section. 
MarineProHelp 2018.