PPD

PPD may refer to:

Computing

• Points Per Day is a mechanism for measuring work done in the Folding@home distributed computing project
• PostScript Printer Description files are created by vendors to describe the entire set of features and capabilities available for their PostScript printers

Political parties

• Partido Popular Democrático, a political party in Puerto Rico
• Partido Popular Democrático/Partido Social Democrata, a political party in Portugal
• Partito Popolare Democratico Svizzero, a political party in Switzerland
• Party for Democracy (Partido por la Democracia), a political party in Chile

Science and Medicine

• p-Phenylenediamine, an aromatic amine
• Paranoid personality disorder, a psychiatric diagnosis
• Persistent Pigment Darkening, a measure of UVA protection by sunscreens
• Pharmaceutical Product Development, a global contract research organization (CRO)
• Postharvest physiological deterioration, a process that renders root tubers of cassava black and inedible
• Postpartum depression, an after childbirth condition
• Pour Point Depressant, a chemical added to crude oil to depress (lower) the Pour point
• ppd, Protopanaxadiol, an active molecule
• Purified Protein Derivative, also known as the Mantoux screening test, Tuberculin Sensitivity Test, Pirquet test, or PPD test, used for tuberculosis testing

Miscellaneous

• Pani Poni Dash!, an anime series
• Partners in Population and Development, an intergovernmental organization
• Philadelphia Police Department, a police agency in Pennsylvania, U.S.
• Phoenix Police Department, a police agency in Arizona, U.S.
• Pontypridd railway station, Wales, National Rail station code
• PPD-40, a Russian submachine gun
• Pre-Paid Legal Services, Inc. New York Stock Exchange ticker symbol
• Published Price to Dealer, a music industry term designating unit price
• Post-Potter Depression, a common syndrome faced by many fans of the series in July 2011.