| Abbreviation | Definition |
|---|---|
| ESS | Employee Satisfaction Survey |
| ESS | Employee Self Service |
| ESS | Environmental Sampling Supply |
| EST | Earliest Starting Time |
| EST | Eastern Standard Time |
| EST | Electronic Sales Tool |
| EST | Employee Support Training |
| EST | Estimated |
| est. | establish(ed) |
| est. | estimate(d) |
| ET | Emergency Tender |
| ET | Executive Training |
| ETA | Estimated Time of Arrival |
| ETA | Expected Time of Accomplishment |
| ETAP | Employee Telephone Access Program |
| ETAP | Entrepreneurial Technology Apprenticeship Program |
| ETAS | Engineering and Technology Administrative Services |
| ETASS | EnRoute Technical Assistance Support Services |
| ETAT | Estimated Turnaround Time |
| ETC | Estimated Time of Completion |