English abbreviations from hcs to hdc
- HCS ((celestial object) Heliospheric Current Sheet, the boundary where the polarity of the Sun's magnetic field changes direction)
- HCSC (Higher Command and Staff Course)
- HCT (HOT Compact Turret)
- HCTA (Helicopter Composite Technology Application)
- HCTAA (Home Care Technology Association of America)
- HCTAR (Harvard Center for Textile and Apparel Research)
- HCTR (High Capacity Truck Radio)
- HCU (High-Capacity Computer Unit)
- HCW (Cheraw Municipal Airport / Lynch Bellinger Field (FAA: CQW))
- HD (Henry Draper (star catalogue))
- HDA (Helideck Assistant)
- HDAS (Heavy- Duty Auxiliary Stand)
- HDB (Heidelberg Airport)
- HDBK (Handbook)
- HDBV (Host Data Base View)
- HDC (Human Development Center)