Frequency Division Multiplexing 
Frequency Division Multiplex 
Finite Difference Method 
Fused Deposition Modeling 
Force Direction Message 
Flight Data Manager 
Fault Detection and Management 
Field-Desorption Microscopy 
Fill and Drain Module 
Frequency Data Multiplexer 
Frequency Division Multiplexed 
frequency domain multiplexing 
fugitive dust model 
Functional Development Models 
Facilities Data Management 
Facility description manual 
factorial design method 
Feature Description Manual 
fetuses of diabetic mothers 
Fiber Distribution Module 
Field-Desorption Microscope 
File Diagnostic Messages 
filter diagonalization method 
Financial Disclosure Management 
Finite Difference Model 
first division metaphases 
First Trust Exchange-Traded Fund 
fixed detection mode 
Flight Data Management 
Flight Data Monitoring