PSD

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PSD can be an abbreviation for:

Contents 1 Politics 2 Sciences 3 Computers 4 Medicine 5 Others

[edit] Politics

• Social Democratic Party, a political party of Portugal.
• Social Democratic Party, a political party of Romania.
• Socialist Destourian Party, the old name (to 1988) of the ruling party in Tunisia, currently called Constitutional Democratic Rally.

[edit] Sciences

• Particle Size Distribution, in crystallography.
• Position sensitive device or position sensitive detector, a device that measures the one or two-dimensional position of a lightspot.
• Positive-semidefiniteness as it relates to matrices.
• Power spectral density. This is the abbreviation used by the MATLAB function used to calculate the PSD.
• Prevention of significant deterioration, an American environmental program created under the Clean Air Act designed to maintain existing air quality in areas already meeting EPA National Ambient Air Quality Standards.
• Postsynaptic density, a specialization of the cytoskeleton at the synaptic junction.

[edit] Computers

• Photoshop Document, the default file extension of the proprietary file format of Adobe System's Photoshop program.
• A portable or personal storage device, small hard drives designed to copy digital photographs from your camera.
• Programmable system device, an integrated circuit manufactured by ST Microelectronics and including Flash-ROM, RAM, and logic functions on a single chip.
• A Program Structure Diagram, also known as a Nassi-Shneiderman diagram.

[edit] Medicine

• Post-traumatic stress disorder, though "PTSD" is more common.

[edit] Others

• Platform screen doors Platform-edge doors used on railway platforms.
• Punch Sport Drink, a drink served to Midshipmen at the United States Naval Academy