English abbreviations from del to dep
- DEL (Indira Gandhi International Airport)
- DELO (Deployment Equipment List - Overseas)
- DELT (Dual Ended Line Test (ing))
- DELTA (delta-T log)
- DEM (Dembidolo Airport)
- DEM/VAL (Demonstration/Validation)
- De max (MAXimum Drift Error)
- DEMIL (Demilitarization)
- De min (MINimum Drift Error)
- DEMNS (Distribution Explosive Mine Neutralization System)
- DEMRI (Development Establishment Maintenance and Refinement Institute)
- DEMS (Digital Electronic Messaging Service)
- DEMSTAT (Deployment, Employment Mob Status)
- DEMUX (DE-MUltipleXer)
- DEN (Denmark (IOC and FIFA trigram, but not ISO 3166))
- DENC (Dual-digital ENCoder ststem)
- DENIS ((observing program/catalog) DEep Near Infrared Survey)
- DENIS-P ((catalog) DEep Near Infrared Survey, Provisory designation [or also known as DNS].)
- DENTAC (Dental Activity)
- DEO (District Education Office)
- DEOMI (Defense Equal Opportunity Management Institute)
- DEP (Daporijo Airport)
- DEP. (Depositus ("Laid to rest"))