Network Data Representation
National Driver Register
negative differential resistance
Non-Delivery Report
Non-Destructive Read
Naming and Design Rules
News Datacom Research, Ltd
Non Delivery Reciept
Non-Destructive Readout
National Death Repository
National defense radar
National Diabetes Register
National Drivers Register
National Driver's Register
National Drug File
natural dose ratio
neg. differential resistance
neonatal death rate
Network Data Reduction
Network Data Representation service
Network Design Request
Network Disaster Recovery
Nil-Ductility Region
nitrodiazoresin
no diabetic retinopathy
normal detrusor reflex
Nuclear Dbf2-Related
Nuclear Defense Research
NUDET detection report