| Acronym | Definition |
|---|
| MCDI➣Medical Care Development International (Silver Spring, MD) |
| MCDI➣Midwest Clean Diesel Initiative |
| MCDI➣MacArthur Communicative Developmental Inventory (children's communication skills) |
| MCDI➣Millennium Compact Disc Industries (Vancouver, British Columbia, Canada) |
| MCDI➣Motion-Compensated De-Interlacing |
| MCDI➣Mainstream Commercial Divers, Inc. (Murray, KY) |