Abbreviations & Acronyms Dictionary

Doctor of Philosophy
Doctor of Philosophy degree
Doctor of Philosophy in Education
Duncan Aviation
IATA code for Harry Clever Field, New Philadelphia, Ohio, United States
Parallel Head Disk
Parallel Hybrid Device
Pathological habit disorder
Payload Handling Device
Per Hatch Per Day
Permanent Hold
Personal Health Data
Phage Host Defective
Phase History Data
Philosophiæ Doctor
Philosophiae Doctor
Philosophical Doctor
Phosducin
Photoelectron Diffraction
Phreak/Hacker Destroyers
Physical Hydrology Division
Piled Higher and Deeper
Pioneer Floating Rate Trust
Plant homeo domain
Plant homeo domains
Playa Hatin Degree
Pleckstrin homology domain
Pocket Hard-disk
Poor Helpless Drunk
Port Hueneme Division
Port Huron and Detroit Railroad
Port Huron and Detroit Railroad Company
Postheparin DAO
Potentially harmful drug
Power Hybrid Doubler
Predicting Health and Disease
Pretty Hard Dick
Pretty Heavy Drinker
Pretty Huge Dick
Process Header Descriptor
Process History Data
Process History Database
Process History Device
Product Hazard Data
Profiled hemodialysis
Project History Document
Prolyl hydroxylase domain
Prolyl hydroxylases
Provincial Health Delegation
Pulmonary heart disease
Pulse Height Discriminator
Pulse Height Discriminators
Push Here Dummy