| Abbreviation | Definition |
|---|---|
| MCICP | M C I Capital I |
| MCIF | M C Informatics, Inc. |
| MCII | Morgan Cooper, Inc. |
| MCKC | M C K Communications, Inc. |
| MCLD | McLeod U S A Incorporated |
| MCLDP | McLeod USA, Inc. Preferred |
| MCLL | Metrocall, Inc. |
| MCLN | cLaren Automotive Group |
| MCLN | McLaren Automotive Group |
| MCLSF | M C 2 Learning Systems, Inc. |
| MCMC | M C M Capital Group, Inc. |
| MCNS | Mediconsult.Com, Inc. |
| MCOM | Metricom, Inc. |
| MCONY | Marconi, P. L. C. |
| MCPH | idland Capital Holdings |
| MCPH | Midland Capital Holdings |
| MCRE | Metacreations Corporation |
| MCRI | Monarch Casino & Resort, Inc. |
| MCRL | Micrel, Inc. |
| MCRS | Micros Systems, Inc. |