The 2015 Inventory of Air Emissions released today shows the Port of Los Angeles has largely continued to preserve clean air gains. The 2015 Inventory of Air Emissions released today shows the Port of Los Angeles has largely continued to preserve clean air gains.
PSI Definition: PSI is a unit of pressure expressed in pounds of force per square inch of area. It stands for Pounds per Square Inch. 1 PSI = 6894 Pascals = 0.070 atmospheres = 51.715 torr. Up Next. Up Next.
Quick Answer. PSI is an acronym that stands for pounds per square inch, and it is the standard unit of measurement for pressure. When measuring tire pressure, the PSI is equal to the pounds of air pressure being exerted on a 1-square-inch area within the tire. Continue Reading