PDD (disambiguation)

PDD often refers to Pervasive developmental disorder.

PDD may also refer to:

Medicine

 * Parkinson's disease dementia
 * Penile dysmorphic disorder
 * Persistent depressive disorder, also known as dysthymia
 * Persons with developmental disabilities
 * Prescribed daily dose
 * Progressive diaphyseal dysplasia, also known as Camurati–Engelmann disease
 * Proventricular dilatation disease, also known as "macaw wasting disease"

Physics and chemistry

 * Percentage depth dose curve, the absorbed radiation dose in a medium, varying with depth.
 * Pulsed discharge detector, a type of gas chromatography ion detector

Computing and technology

 * Physical device driver
 * An alternative file extension for Portable Document Format files that are preferentially opened by Adobe Photoshop
 * Process Driven Development, software development methodology
 * Professional Disc for DATA or ProDATA, an optical disc format produced by Sony

Business and law

 * Pinduoduo, NASDAQ ticker PDD
 * Project Design Document, a precise project description which serves as the basis for the Clean Development Mechanism (CDM) (project evaluation)
 * Public Domain Day, an observance of when copyrights expire and works enter into the public domain

Politics

 * Partnership for Democracy and Development in Central America
 * Party for Democratic Action (Partija za demokratsko delovanje), a political party in Serbia
 * Presidential Decision Directive, a kind of national security directive from the Bill Clinton presidency

Arts

 * P. Diddy, rapper and entrepreneur
 * Pas de deux, a type of ballet dance
 * Pinky Dinky Doo, children's television series
 * Please Don't Destroy, comedy group from New York City