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| Specific gravity
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The ratio of a weight or mass of a given volume of a substance to that of an equal volume of another substance, water for liquids and solids, air or hydrogen for gases. |
| Specific heat
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The amount of heat required to raise a unit mass of a substance through one degree, expressed as a ratio of the amount of heat required to raise an equal mass of water through the same range. |
| Specific humidity
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The weight of water vapor, per unit weight of dry air. |
| Specific lien
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Lien on a given property, such as a person's house as collateral for a loan. |
| Specific performance
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A legal action in which the court requires a party to a contract to perform the terms of the contract when he has refused to fulfill his obligations. |
| Specific volume
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The volume of a unit weight of a substance at a specific temperature and pressure. |
| Specifications
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The written or printed direction regarding the details of a building or other construction not included in the set of working drawings. |
| Specs
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The products and the plans for construction of a building. |
| Spectral energy efficiency distribution
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A curve illustrating the variation or spectral irradiance with wavelength. |
| Spectral irradiance
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The monochromatic irradiance of a surface per unit bandwidth at a particular wavelength, usually expressed in Watts per square meter-nanometer bandwidth. |
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