| Acronym | Definition | 
|---|
| PSD➣(Adobe) Photoshop Data file (Extension) | 
| PSD➣Prevention of Significant Deterioration | 
| PSD➣Photoshop Design | 
| PSD➣Power Spectral Density | 
| PSD➣Programming and Software Development | 
| PSD➣Photoshop Document | 
| PSD➣Poudre School District (Fort Collins, CO) | 
| PSD➣Private Sector Development | 
| PSD➣Population and Sustainable Development (American Association for the Advancement of Science) | 
| PSD➣Partido Social Democrata (Portuguese: Social Democratic Party) | 
| PSD➣Payment Services Directive (EU) | 
| PSD➣Public Service Delivery | 
| PSD➣Social Democratic Party (Central African Republic) | 
| PSD➣Planetary Science Division (US NASA) | 
| PSD➣Passive Solar Design (buildings) | 
| PSD➣Particle Size Distribution | 
| PSD➣Pesticides Safety Directorate (UK) | 
| PSD➣Phase Space Density | 
| PSD➣Product Sales Data | 
| PSD➣Parti Social Démocrate (Social Democratic Party, Cape Verde) | 
| PSD➣Partidului Social Democrat (Romanian) | 
| PSD➣Power Split Device (hybrid vehicles) | 
| PSD➣Political Subdivision (Pennsylvania taxes) | 
| PSD➣Personnel Support Detachment | 
| PSD➣Platform Screen Door (trains) | 
| PSD➣Philadelphia School District (Philadelphia, PA) | 
| PSD➣Porsche Sperrdifferential | 
| PSD➣Post Script Driver | 
| PSD➣Photo Shop Development | 
| PSD➣Persistent Storage Device | 
| PSD➣Packet Switched Data | 
| PSD➣Package Substrate Defect | 
| PSD➣Power Spectral Densities | 
| PSD➣Page Setup Dialog | 
| PSD➣Photo Shop Document | 
| PSD➣Photo Shop Data | 
| PSD➣Project Start Date | 
| PSD➣Pharmaceutical Services Division (various organizations) | 
| PSD➣Pacific Southwest District (Irvine, CA) | 
| PSD➣Position Sensitive Detector | 
| PSD➣Public Service Division (Singapore) | 
| PSD➣Public Safety Dispatcher (various locations) | 
| PSD➣Partido Solidaridad Democratica (Spanish: Democratic Solidarity Party) | 
| PSD➣Partido Social Democrãtico (Portugese: Social Democratic Party, Cape Verde) | 
| PSD➣Power Stroke Diesel (Ford) | 
| PSD➣Personal and Social Development | 
| PSD➣Pascagoula School District (Mississippi) | 
| PSD➣Post-Synaptic Density (neurobiology) | 
| PSD➣Post Source Decay | 
| PSD➣Pottstown School District (Pottstown, PA) | 
| PSD➣Postal Service Department (Nepal) | 
| PSD➣Postsynaptic Densities | 
| PSD➣Principal Shopping District (Michigan) | 
| PSD➣Personal Secure Drive | 
| PSD➣Pawtucket School Department (Pawtucket, RI) | 
| PSD➣Professional Software Development | 
| PSD➣Personal Security Detachment | 
| PSD➣Public Safety Department | 
| PSD➣PowerStroke Diesel (Ford Motor Company) | 
| PSD➣Post-Stroke Depression (psychology) | 
| PSD➣Pennsylvania School for the Deaf | 
| PSD➣Product Safety Directive | 
| PSD➣Power Sliding Door | 
| PSD➣Page Setup Dialog (Windows programming) | 
| PSD➣Production Services Directory (film; various locations) | 
| PSD➣Public Security Directorate (Jordan) | 
| PSD➣Phase Sensitive Detector (lock-in amplifier) | 
| PSD➣Planning Systems Division (US DoD) | 
| PSD➣Primary Storage Device (computing) | 
| PSD➣Presidential Security Detail (US State Department) | 
| PSD➣Partido Socialista Democrático (Social Democratic Party, Brazil) | 
| PSD➣Product Specifications Document | 
| PSD➣Power Savings Drive (Hybrid Disc Drive that includes flash memory to reduce drive motor operation) | 
| PSD➣Partia Socialdemokrate (Social Democratic Party, Albania) | 
| PSD➣Pattern Standard Deviation (glaucoma testing) | 
| PSD➣Photon Stimulated Desorption | 
| PSD➣Philomath School District (Philomath, OR) | 
| PSD➣Protective Security Detail | 
| PSD➣Process Shutdown (oil, chemical and process industries) | 
| PSD➣Postal Security Device | 
| PSD➣Protective Services Division | 
| PSD➣Personnel Support Activity Detachment (US Navy) | 
| PSD➣Parti Social Démocratique (French: Social Democratic Party) | 
| PSD➣Professional Staff Development | 
| PSD➣Professional Standards Directorate (UK) | 
| PSD➣Program Support Division (USACE) | 
| PSD➣Professional Standards Division | 
| PSD➣Parkway School District (Missouri) | 
| PSD➣Platform Solutions Division (software) | 
| PSD➣Protective Service Detail | 
| PSD➣Pediatric Spectrum of HIV Disease | 
| PSD➣Petal School District (Petal, Mississippi) | 
| PSD➣Programmable System Devices | 
| PSD➣Platforms Services Division (Microsoft) | 
| PSD➣Pennridge School District (Perkasie, Pa) | 
| PSD➣Passive Sampling Device(s) | 
| PSD➣Pulse Shape Discriminator | 
| PSD➣Process Specification Departure | 
| PSD➣Palisades School District (Kintnersville, Pennsylvania) | 
| PSD➣Play Sequence Descriptor | 
| PSD➣Photo Storage Device | 
| PSD➣Public Service Director | 
| PSD➣Program Support Data | 
| PSD➣Physiological Support Division | 
| PSD➣Photoshop Deluxe (Adobe bitmap file editor) | 
| PSD➣Prevention of Serious Deterioration | 
| PSD➣Port-Sharing Device | 
| PSD➣Proposed Sourcing Decision (various locations) | 
| PSD➣Pipeline Systems Division (American Society of Mechanical Engineers) | 
| PSD➣Propulsion Systems Division | 
| PSD➣Product Service Description (Interoperability Elements of Service) | 
| PSD➣Punch Sport Drink (United States Naval Academy) | 
| PSD➣Printer Sharing Device | 
| PSD➣Power Semiconductor Device | 
| PSD➣Posterior Standard Deviation | 
| PSD➣Pyramid Systems Development (Cairo, Egypt) | 
| PSD➣Prestation Solidarité Dépendance (French: Solidarity Benefit Dependency) | 
| PSD➣Production Shutdown | 
| PSD➣Personnel Service Division | 
| PSD➣Photo Smoke Detector (fire alarm systems) | 
| PSD➣Program for Sustainable Development | 
| PSD➣Promotion Service Date | 
| PSD➣Port Security Detachment | 
| PSD➣Package Solution Definition | 
| PSD➣Pulse-Shaped Discrimination | 
| PSD➣Program Status Data | 
| PSD➣President Security Division (Sri Lanka) | 
| PSD➣Polling Station Diary (voting) | 
| PSD➣Pressure-Sensitive Digitizer | 
| PSD➣Power Systems Demonstrator | 
| PSD➣Project Support Data | 
| PSD➣Personnel Service Directorate | 
| PSD➣Program Security Directive | 
| PSD➣Planned Ship Date | 
| PSD➣Post Security Detachment | 
| PSD➣Port Safety Detachment (US Coast Guard) | 
| PSD➣Packet Switch Design | 
| PSD➣Polystyrene, Deuterated | 
| PSD➣Printed Strip Dipole | 
| PSD➣Polysubstance Dependency | 
| PSD➣Port Scan Detection/Detector | 
| PSD➣Power Supply Drawer | 
| PSD➣Product System Demonstration | 
| PSD➣Purchasing Support Directories |