(i) PSI – Police Sub Inspector
The full form of PSI is Police Sub Inspector. A PSI ranks higher than an assistant sub-inspector (ASI) and lower than an Inspector. As per the police rules and regulations, he is the lowest ranking officer who can file a charge sheet in court. Insignia for PSIs consists of two stars with red and blue striped ribbons at the end of the shoulder straps. Staff Selection Commission is responsible for recruiting Police Sub Inspectors in central police forces such as SSB, CISF, and BSF. A police sub inspector is also called a Sub Inspector (SI).
(ii) PSI – Pound per Square Inch
The full form of PSI is Pound per Square Inch. Basically, it is the pressure generated by the force of one pound of force applied to one square inch of area. It is a unit of pressure. 1 pound per square inch equals 6894.76 (6895 approx.) pascals. PSI is also called Pound-Force per Square Inch.
Other PSI Full Form
| S.No. | Category | Full-Form |
|---|---|---|
| PSI | Science | Pound per Square Inch |
| PSI | Miscellaneous | Population Stability Index |
| PSI | Government | Public Sector Information |
| PSI | Education | Pechersk School International |
| PSI | Charity | Paranormal Site Investigators |
| PSI | Medical | Pneumonia Severity Index |
| PSI | Computing | Program Specific Information |
| PSI | Miscellaneous | Present Serviceability Index |
| PSI | Company | Prudential Securities Incorporated |
| PSI | Organization | Population Services International |
| PSI | Military | Permanent Staff Instructor |
| PSI | Economics | Private Sector Involvement |
| PSI | Government | Proliferation Security Initiative |
| PSI | Education | Planetary Science Institute |
| PSI | Police | Police Sub Inspector |