| Abbreviation | Definition |
|---|---|
| PCIS | Precis Smart Card Systems |
| PCIS | Precis, Inc. |
| PCIT | Point of Care Technology, Inc. |
| PCLE | Pinnacle Systems, Inc. |
| PCLI | Physicians Clinical, Inc. |
| PCLI | Protocall Techs Incorporated |
| PCLI.PK | Protocall Technologies, Inc. |
| PCLIQ | Physicians Clinical Laboratory, Inc. (in bankruptcy) |
| PCLJ | Paperclip Imaging Software |
| PCLN | Priceline.Com, Inc. |
| PCLP | PaperClip Imaging Software Company |
| PCMM | Prescious Metal Mines, Inc. |
| PCMM | Prescious Metal Mines, Incorporated (de-listed) |
| PCMM | Prescious Metal Mines, Incorporated (de-listed) |
| PCMS | P-Com, Inc. |
| PCNA | Publishing Company of America, Inc. |
| PCNTF | Pacific Internet, LTD. |
| PCOL | Protocol Systems, Inc. |
| PCOM | Pointe Communications Corporation |
| PCOP | Pharmacopeia, Inc. |