Question

what is the full form of psi.

Answer 1

per square inch is the full form of psi

Answer 2

Answer:

The pound per square inch or, more accurately, pound-force per square inch (symbol: lbf/in2; abbreviation: psi) 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.