Pounds Per Square Inch (PSI): A unit for measuring pressure. One PSI equals the pressure resulting from a force of one pound force acting over an area of one square inch.

 

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Pounds Per Square Inch (PSI): A unit for measuring pressure. One PSI equals the pressure resulting from a force of one pound force acting over an area of one square inch.

Perpendicular Spread: Option strategy involving the purchase of options with similar expiration dates and different exercise prices.

Peroxisomes: Membrane-bound vesicles in eukaryotic cells that contain oxidative enzymes.

Perpetual Bond: Nonredeemable bond with no maturity date that pays regular interest rates indefinitely.

Perpetual Inventory: Recordkeeping system in which book inventory is updated daily.

Perpetual Inventory Method: A system of accounting for inventory in which detailed records of the number of units and the cost of each purchase and sales transactions are prepared throughout the accounting period.

Pernod: A French made, anise flavored substitute for now illegal absinthe. 80 proof.

Permucosal Pin Implants: Endosseous dental implants, shafts of which are threaded or smooth, used in bipodial or tripodial configurations as an abutment.

Permian Period: The last geologic time period of the Paleozoic Era, noted for the greatest mass extinction in earth history, when nearly 96% of species died out.

Permeable: Allows another material to pass through without effecting the existing material.