What does UPD stand for?

Air Foyle Charter Airways Ltd. - British - FAA designator (FAAC)

Ultrasonic Positioning Device (RALS)

Underpotential Deposition - Electrochemistry

Uniaxial Plastic Deformation (SAUS)

Unified Port District (SAUS)

Uniformly Positive Definite (SAUS)

Union des Patriotes Democratiques - Haiti - Political party (EY)

United Port District (WDAA)

Unit Power Density - Lighting

Universally Programmable Digitizer (SAUS)

Universally Programmable Digitizer Update (IAA)

Universal Publishing & Distribution Corp. (EFIS)

Unpaid (ADA)

Update

Uplander - NCIC firearms make code (NCIC)

Urban Planning Directorate - British

Urinary Production - Medicine (EDAA)