| Acronym | Definition |
|---|
| ECDI➣Economic and Community Development Institute |
| ECDI➣Expertise Certification et Diagnostics Immobilières (French: Certification and Diagnostics Estate Expertise) |
| ECDI➣Early Childhood Development Initiative (Canada) |
| ECDI➣Early Child Development Inventory (questionnaire) |
| ECDI➣Électricité Contrôle Développement International (French: Electricity Control International Development; various locations) |
| ECDI➣1-Ethyl-3-Diaminopropyl Carbodiimide |
| ECDI➣External Class Description, Inherited Class Members |
| ECDI➣Electron Cyclotron Drift Instability (earth science) |