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.
2. psi-the 23rd letter of the Greek alphabet. Greek alphabet-the alphabet used by ancient Greeks. alphabetic character, letter of the alphabet, letter-the conventional characters of the alphabet used to represent speech; his grandmother taught him his letters.