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| Postern
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A private entrance at the side or rear of a building. |
| Postheat
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Additional heat applied to a welded metal joint and the surrounding area after welding, brazing or soldering to improve the condition of the metal. |
| Pot bound
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A plant growing in a pot which is too small to allow proper leaf and stem growth. Roots will start to grow in a circle in the pot. |
| Pot life
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The period of time during which a material with multiple ingredients can be applied or administered after being mixed together. |
| Potable
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Water suitable for drinking. |
| Potential difference
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Force which makes an electrical current flow. Voltage. |
| Potential energy efficiency
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Energy available due to position. |
| Potential gross income
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The amount of income that could be produced by the sale or rental of property or rendering of services. |
| Potential hydrogen (ph)
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A scientific measure of acidity and alkalinity. Basically, pH is a measure of the amount of lime (calcium) contained in your soil. A soil with a pH lower than 7.0 is an acid soil, a soil pH higher than 7.0 is alkaline soil. Soil pH can be tested with an inexpensive test kit obtained at your local garden center. |
| Potentially responsible parties (prp)
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Referring to a Superfund site, all owners, operators, transporters and disposers of hazardous waste are potentially responsible parties. |
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