PSI Full Form – What Does PSI Stand For?
The short answer is that the full form of PSI or PSI stands for “Pound per Square Inch”.
In detail, the full form of PSI or PSI stands for Pound per Square Inch. One PSI is equal to the pressure which is exerted when one pound-force is applied to an area of one square inch. So, PSI is the measurement of the force that applies to one square inch area.