NASA Abbreviations and Acronyms

1. HDPE
   High-Defsity Polyethylene Shielding
2. HDPLX
   Half Duplex
3. HDQ
   Headquarters
4. HDR
   High Data Rate
5. HDRA
   High-Data-Rate Assembly
6. HDRM
   High-Data-Rate Multiplexer
7. HDRR
   High-Data-Rate Recorder
8. HDRS
   High-Data-Rate System
9. HDRSS
   High-Data-Rate Storage System
10. HDS
    Hardware Description Sheet
11. HDST
    Headset
12. HDT
    High Density Tape
13. HDT-A
    High Density Tape
14. HDTV
    High-Definition Television
15. HDW
    Hardware
16. HDWD
    Headwind
17. HDWE
    Hardware
18. HDWR
    Hardware
19. HDX
    Half Duplex
20. HE
    Heat Exchanger

Last updated: May 6, 2025 — Total entries: 14,020