The full form of “PSI” can vary depending on the context in which it is used. Here are a few common meanings:
- Pounds per Square Inch: A unit of pressure commonly used in the United States to measure tire pressure and other applications.
- Pressure Systems International: A company or organization name that may use the acronym PSI.
- Private Security Industry: Referring to the sector involved in providing security services.
- Psychological Services, Inc.: A name that could refer to a specific organization offering psychological services.
- Pre-Sales Engineer: In technology and sales, referring to a professional who supports the sales process.
If you have a specific context in mind, please let me know, and I can provide a more precise definition!