Plesiochronous Digital Hierarchy
Plesiochronous Data Hierarchy
Professional Development Hour
Pocket Dosimeter-High
Plesiosynchronous Digital Hierarchy
Professional Development Hours
Pretty darn hot
Progressive disseminated histoplasmosi…
pyruvate dehydrogenase
paraduodenal hernia
pars distalis homogenate
past dental history
Payload Data Handling
Performance Data Helper
phase difference haploscope
Philibert-Duncumb-Heinrich
pigment-dispersing hormone
pituitary-dependent hyperadrenocortici…
Planned Derated Hours
Plesiochronic Digital Hierarchy
Plesiocronous Digital Hierachy
Plesynchronious Data Hierarchy
position-of-the-dynamometer-handle
Pretty Damn High
Pretty darn happy
Primary Digital Hierachy
Primary duck hepatocyte
primary duck hepatocytes
Processor Dependent Hardware
proline dehydrogenase