# Definitions for specific gravityspe·cif·ic grav·i·ty

### Princeton's WordNetRate this definition:0.0 / 0 votes

1. specific gravitynoun

the density of a substance relative to the density of water

### WiktionaryRate this definition:0.0 / 0 votes

1. specific gravitynoun

The ratio of the mass of a substance to that of an equal volume of water at 4°C (or to some other reference substance)

### WikipediaRate this definition:0.0 / 0 votes

1. specific gravity

Relative density, or specific gravity, is the ratio of the density (mass of a unit volume) of a substance to the density of a given reference material. Specific gravity for liquids is nearly always measured with respect to water at its densest (at 4 °C or 39.2 °F); for gases, the reference is air at room temperature (20 °C or 68 °F). The term "relative density" (often abbreviated r.d. or RD) is often preferred in scientific usage, whereas the term "specific gravity" is deprecated. If a substance's relative density is less than 1 then it is less dense than the reference; if greater than 1 then it is denser than the reference. If the relative density is exactly 1 then the densities are equal; that is, equal volumes of the two substances have the same mass. If the reference material is water, then a substance with a relative density (or specific gravity) less than 1 will float in water. For example, an ice cube, with a relative density of about 0.91, will float. A substance with a relative density greater than 1 will sink. Temperature and pressure must be specified for both the sample and the reference. Pressure is nearly always 1 atm (101.325 kPa). Where it is not, it is more usual to specify the density directly. Temperatures for both sample and reference vary from industry to industry. In British brewing practice, the specific gravity, as specified above, is multiplied by 1000. Specific gravity is commonly used in industry as a simple means of obtaining information about the concentration of solutions of various materials such as brines, must weight (syrups, juices, honeys, brewers wort, must, etc.) and acids.

### FreebaseRate this definition:0.0 / 0 votes

1. Specific gravity

Specific gravity is the ratio of the density of a substance compared to the density of a reference substance. Apparent specific gravity is the ratio of the weight of a volume of the substance to the weight of an equal volume of the reference substance. The reference substance is nearly always water for liquids or air for gases. Temperature and pressure must be specified for both the sample and the reference. Pressure is nearly always 1 atm equal to 101.325 kPa. Temperatures for both sample and reference vary from industry to industry. In British brewing practice the specific gravity as specified above is multiplied by 1000. Specific gravity is commonly used in industry as a simple means of obtaining information about the concentration of solutions of various materials such as brines, hydrocarbons, sugar solutions and acids.

### The Nuttall EncyclopediaRate this definition:0.0 / 0 votes

1. Specific Gravity

the weight of a body compared with another of equal bulk taken as a standard, such as the weight of a cubic inch of water.

### U.S. National Library of MedicineRate this definition:0.0 / 0 votes

1. Specific Gravity

The ratio of the density of a material to the density of some standard material, such as water or air, at a specified temperature.

### Dictionary of Nautical TermsRate this definition:0.0 / 0 votes

1. specific gravity

The comparative weights of equal bulks of different bodies, water being generally represented as unity.

### Military Dictionary and GazetteerRate this definition:0.0 / 0 votes

1. specific gravity

See Gravity.

### Numerology

1. Chaldean Numerology

The numerical value of specific gravity in Chaldean Numerology is: 5

2. Pythagorean Numerology

The numerical value of specific gravity in Pythagorean Numerology is: 1

## Translations for specific gravity

### From our Multilingual Translation Dictionary

• spezifisches Gewicht
• ειδικός βάρος
• peso específico
• ominaispaino
• वि
• fajsúly
• berat jenis
• peso specifico
• כוח משיכה ספציפי
• 比重
• удельный вес
• 比重

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