The meaning of the Acronym PSIS is...

PSIS is

• Pesticide Safety Information Series
• Population And Social Integration Section
• Preparatory School For International Students
• Poison Substance Information System

More Meanings For PSIS:

• Pesticide Safety Information Series
• Population And Social Integration Section
• Preparatory School For International Students
• Poison Substance Information System
• Pounds Per Square Inch Sealed

PSIS is also in:

• NASA
• Unfiled