| Abbreviation | Definition |
|---|---|
| FDBL | Fecal Daily Blood Loss |
| FDC | Floppy Disk Controller |
| FDC | Familial Dilated Cardiomyopathy |
| FDC | Follicular Dendritic Cell |
| FDC | Facility Design Criteria |
| FDC | "Fees, Deposits, and Credits" |
| FDD | Flight Dynamics Division |
| FDD | Flight Definition Document |
| FDD | Foreign Demand Draft |
| FDDB | Function Designator Data Base |
| FDDI | Fiber Distributed Data Interface |
| FDE | Flight Dynamics Engineers |
| FDE | Failure Detection Electronics |
| FDE | Fluid Dynamics Experiment |
| FDE | Flight Data Entry |
| FDEP | Flight Data Entry and Printout |
| FDES | Framework of Environment Statistics |
| FDF | Flight Dynamics Facility |
| FDFD | Finite Difference Frequency Domain |
| FDFEM | Frequency Domain Finite Element Method |
| FDI | Foreign Direct Investment |
| FDI | Failure Detector Indicator |
| FDI | Fault Detection and Identification |
| FDI | Fault Detection and Isolation |
| FDIC | Federal Deposit Insurance Corporation |
| FDISK | Partition a Fixed Disk |
| FDL | Flight Director Loop |
| FDM | Front Desk Manager |
| FDM | Flight Data Manager |
| FDM | Frequency Data Multiplexer |
| FDM | Frequency Division Multiplexing |
| FDM | Finite Difference Method |
| FDMA | Full Diameter Motorized Door Assembly |
| FDNY | Fire Department of the City of New York |
| FDO | Functional Device Object |
| FDO | Form Definition Operator |
| FDO | Fee Determination Official |
| FDO | Flight Dynamics Officer |
| FDOR | Flight Design Operations Review |
| FDP | Flexor Digitorum Profundus |
| FDP | Flight Data Processing |
| FDPS | Flight Data Processing System |
| FDR | Flight Data Recorder; Fixed Deposit Receipt |
| FDR | Flight Director Response |
| FDR | Flight Data Recorder |
| FDR | Final Design Review |
| FDR | Functional Design Review |
| FDR | For the Future of Agriculture |
| FDR | Federal Deposit Reimbursement |
| FDRD | Flight Definition and Requirements Document |