Main Page | See live article | Alphabetical index PSF is a three-letter abbreviation or three-letter acronym (TLA) that may stand for: Point spread function Private sector forestry Pounds per square foot Price per square foot Penile scrotal fusion Python Software Foundation Protein Structure Factory Prolate spheroidal function Police Suicide Foundation Pharmaciens sans Frontières Perfect Storm Foundation Piano Santa Foundation Pacific Salmon Foundation Planetary Studies Foundation Proteus Syndrome Foundation Phelps-Stokes Fund Permanent School Fund Plastic Surgeons Forum PlayStation Sound Format This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.