MECI
| Acronym | Definition |
|---|---|
| MECI | Modelo Estándar de Control Interno (Spanish: Standard Model of Internal Control) |
| MECI | Multi-Electron Configuration Interaction |
| MECI | Mendelson Electronics Company, Inc. (est. 1960; Dayton, OH) |
| MECI | Mission Essential Contingency Item |
| MECI | Mono-Excited Configuration Interaction |
| MECI | Mark Edelstein Consulting Incorporated (Buffalo Grove, Illinois) |