What does PPSI stand for?

Private Public Sector Industry

Procram In The Practice of Scientific Investigation

Project Preventie Seksuele Intimidatie

Pounds Per Square Inch

The pound per square inch or, more accurately, pound-force per square inch (abbreviations: psi, lbf/in2, lbf/in2, lbf/sq in, lbf/sq in) 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.

Program Profile and Services Inoentory

Prosedur Pengembangan Sistem Instruksioeal

Proyek Pengembangan Sistem Informasi

Public Policy Studies Institute

Porous Polycrystalline Silicon