English abbreviations from dd to ddbl
- DD (Differential diagnosis)
- D.D. (Doctores ("Doctors"))
- DD/D (Data Dictionary/Directory)
- DD-50 (50-pin D-SUB (series D subminiature) connector)
- DDA (Detroit Diesel Allison)
- DDAF (Design Description And Features)
- DDAL (Doris Day Animal League)
- DDAM (Drunk Drivers Against Mothers)
- DDASS (Division DSU Automated Supply System)
- DDAT (Detailed Design, Analysis, and Testing)
- D-DAY (Unnamed Day on which Operations are scheduled to Commence)
- DDB (Deaf, Dumb, and Blind)
- DDBA (Dixie Deaf Bowlers Association)
- DDBF (Detroit District Benevolent Fund)
- DDBHC (DDBHC waveform log)
- DDBL (Dismounted Battlespace Battle Lab)