| Abbreviation | Definition |
|---|---|
| ECCSCM | Environmentally Concerned Citizens Of South Central Michigan |
| ECD | Environmental Classification Document |
| ECD | Environmental Compliance Database |
| ECED | Environmental Compliance Enforcement Division |
| ECEE | European Committee for Environmental Education |
| ECER | East Coast Electronics Recycling |
| ECES | Elite Cleaning and Environmental Services |
| ECES | Environmental Cost Element Structure |
| ECET | Environment Canada Emissions Test |
| ECG | East Coast Greenway |
| ECGA | Energy Conservation Grant Award for Affordable Multi-family Housing |
| ECHA | European Chemicals Agency |
| ECHO | Ecology Culture History And Opportunity |
| ECHO | Environmental Camp For Helping Others |
| ECHO | Environmental, Cultural, Historic, and Outdoors |
| ECHS | Environmental Charter High School |
| ECI | Environmental Change Institute |
| ECI | Environmental Condition Indicator |
| ECI | Environmental Consultants Inc |
| ECLSS | Environmental Control And Life Support System |