PD - Phase-change Dual

PDA - Push Down Automate

PDA - Personal Digital Assistant

PDBS - Parallel Database System

PDC - Peripheral Direction Contributive

PDC - Primary Domain Controller

PDCA - Plan Do Check and Act

PDD - Physical Data Design

PDD - Portable Digital Document

PDD - Physical Device Driver

PDE - Partial Differential Equation

PDES - Product Data Exchange Specification

PDF - Portable Document Format

PDF - Package Definition File

PDF - Processor Defined Function

PDF - Portable Document File

PDF - Program Development Facility

PDG - Program Dependence Graph

PDH - Plesivchronous Digital Hierarchy

PDI - Process Data Interface

PDIAL - Public Dial - up Internet Access List

PDL - Program Description Language

PDL - Page Description Language

PDL - Program Design Language

PDM - Precedence Diagramming Method