| Acronym | Definition |
|---|
| PCSI➣Personal Computer Serial Interface |
| PCSI➣Printer Control and Status Interface |
| PCSI➣Pacific Communication Sciences, Inc. |
| PCSI➣Patient Classification Systems International |
| PCSI➣Pakistan Cotton Standard Institute |
| PCSI➣Perfect Channel State Information |
| PCSI➣Point & Click Software, Inc. (Ohio) |
| PCSI➣Polymer Coatings and Surfacings Institute |
| PCSI➣Patton Counseling Services, Inc (Asheville, NC) |
| PCSI➣Poseidon Computer Systems, Inc (Pensacola, FL) |