pound-force per square inch

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Definition of pound-force per square inch in English English dictionary

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pound-force per square inch

The pound per square inch or, more accurately, pound-force per square inch (symbol: psi or lbf/sq in) is a unit of pressure or of stress based on avoirdupois units. It is the pressure resulting from a force of one pound-force applied to an area of one square inch: 1 lbf/sq in ¡Ö 6,894.757 Pa (the SI unit of pressure)