PSE

PSE is the IATA code for Mercedita Airport, and an abbreviation for:

* Page Size Extension, paging mechanism in computer microprocessor
* Pale, Soft, Exudative, meat having a pH below 5.6
* Palestine Stock Exchange
* Paris School of Economics, a French academic foundation located in Paris
* Partido Socialista de Euskadi, Basque affiliate of the Spanish Socialist Workers' Party
* Party of European Socialists (French: "Parti socialiste européen" (PSE)
* Periodic system of elements, that is, the periodic table
* Personal and Social Education, component of the state school curriculum in Britain
* Philippine Stock Exchange
* Planed Square Edged, timber
* Photosensitive epilepsy
* Pidgin Signed English
* Point of subjective equality, the point in psychophysics where the subject perceives two different stimuli to be the same
* Power sourcing equipment which brings electricity to PoE devices
* PSE law as in Product Safety Electrical Appliance & Material, a Japanese standard for electrical appliance safety.
* Polskie Sieci Elektroenergetyczne, a Polish energy company
* Psychological Stress Evaluator
* Prague Stock Exchange
* Problem Solving Environment
* Producer Support Estimate, a measure published by the OECD
* Professional Stamp Experts, postage stamp grading and authentication service used as an aid in Philatelic investment. A stamp with a PSE certificate has been verified to be genuine by this service
* Pseudoephedrine
* Puget Sound Energy
* Physical and Social Education, taught in secondary schools
* Photoshop Elements, a consumer image manipulation program from Adobe
* Pi Sigma Epsilon, the only national, co-ed, professional fraternal organization in sales, marketing, and management
* Process System Engineering