| Acronym | Definition |
|---|
| EECO➣Early Eocene Climatic Optimum (paleotemperature) |
| EECO➣Environmental Education Council of Ohio (Lancaster, OH) |
| EECO➣Environment and Energy Conference (GLOBE Foundation of Canada) |
| EECO➣East End Community Organic Farm (East Hampton, NY) |
| EECO➣Elevator Equipment Corporation (Los Angeles, CA) |
| EECO➣Electronic Engineering Company of California |
| EECO➣End-Expiratory Carbon Monoxide |