Found 9 full forms for PHDD
| Term | Full Form | Category |
|---|---|---|
| PHDD | Percent Heavy Drinking Days 
| Others |
| PHDD | Percentage of Heavy Drinking Days
| Others |
| PHDD | Pigheaded Disciplined and Determined
| Others |
| PHDD | Pilot Head Down Display
| Others |
| PHDD | Polyhalogenated Dibenzodioxin
| Others |
| PHDD | Portable Hdd
| Others |
| PHDD | Power Hybrid Decision Diagram
| Others |
| PHDD | Power Hybrid Decision Diagrams
| Others |
| PHDD | Proprietary Hdd
| Others |