HPDI
High Pressure Direct Injection
IPDI
3-Isophorondiisocyanat
PDI
Packet Driver Interface
PDIAL
Public Dialup Internet Access List
PDIF
Product Definition Interchange Format
AA
American national standard code for information interchange (ASCII) Art
AADP
Administrative Automatic Data Processing
AASP
American national standard code for information interchange (ASCII) Asynchronous Support Package
AAVD
Automatic Alternate Voice Data