What does po stand for?

Oceanica - MARC geographic area code - Library of Congress (LCCP)

Per Os - By Mouth - Latin (AD)

Poetry (AD)

Polarity (AD)

Portugal - MARC country of publication code - Library of Congress (LCCP)

Post Office (WDMC)

Power-Operated (AD)

Power Oscillator (AD)

Previous Orders (AD)

Putout (ADWA)

Polonium - Chemical element

Polyzoa - Quality of the bottom - Nautical charts

Portuguese - Language, etc. (DLA)

Possible

Aeropelican Intercity Commuter Air Services - ICAO designator (AD)

Disney's Port Orleans Resort - Disney (DIS)

Dust/Sand Whirls - Weather codes - aviation - Sand pockets (PIPO)

Office of Policy, Planning and Program Evaluation (SAUS)

Officer Personnel Division - Coast Guard

Oil City Library, Oil City, PA - Library symbol - Library of Congress (LCLS)

Oscillopolarograph

Paarieto-Occipital - Medicine (DMAA)

Pacific Ocean

Pacific Ocean Region - Communications term (DCT)

Page Overflow (SAUS)

Palomar Capital - Vancouver Stock Exchange symbol

Paper Out (SAUS)

Parallel Output - Computer science (BUR)

Parcels Office (ODA)

Parieto-Occipital - Anatomy (AAMN)

Parity Odd

Parking Orbit - NASA

Parliamentary Officer - Australia

Parole Officer

Partial Pressure of Oxygen (DAVI)

Passport Office - Department of State

Patent Office - Later, PTO - Department of Commerce

Patents Office (SAUS)

Path Operator (SAUS)

Patrologia Orientalis - A publication (ODCC)

Payment Order (FOTI)

Performance Objectives (OICC)

Performing Organization (NITA)

Period of Onset - Medicine

Perioperative - Medicine (DMAA)

Permit Office - British (ROG)

Peroral (SAUS)

Per Orally (SAUS)

Per Order (WDMC)

Per Os - By Mouth - Pharmacy

Peroxidase - Also, POD - An enzyme

Persistent Object (SAUS)

Personnel Office - Kennedy Space Center Directorate (NASA)

Personnel Officer

Pesticides Office - Environmental Protection Agency

Petroleum Officer (SAUS)

Petty Officer - Navy

Phase Optimization (SAUS)

Phase Oscillation (SAUS)

Phase-Out

Phenoxy (EDCT)

Philadelphia Orchestra (SAUS)

Philharmonic Orchestra - Music

Phone Order - Therapy term (CTAA)

Photogrammetric Operations - Imaging and Geospatial Information Society (GIS)

Phymatotrichum omnivorum - A fungus

Physical Oceanography (SAUS)

Physical Optics (SAUS)

Physician Organization (MHCS)

Pilot Officer (ODA)

Piss Off - Internet lingo

Planetary Office (IAA)

Planetary Orbit

Planked Oval - Auto racing

Planned Obsolescence (MHDB)

Planning Objectives (VLIE)

Planning Order - Military technology (DDF)

Planted on (SAUS)

Plotter-Output (SAUS)

Plotting Officer (SAUS)

Poco - Somewhat - Music

Point (WGA)

Poland - NCIC firearms make code (NCIC)

Poland - NCIC country-territory code (NCIC)

Polarity (AAG)

Polar-Optical (SAUS)

Pole - Unit of measurement

Pole Operator (SAUS)

Political Officer - NATO

Polskie Zaklady Lotnicze - Poland - ICAO aircraft manufacturer identifier (ICAO)

Polymerizable Oligomer (OA)

Polymerizable Oligomers (SAUS)

Polyolefin - Organic chemistry

Polyot (SAUS)

Poly Propylene Oxide (EDCT)

Por Orden - By Order - Spanish

Portal (DB)

Port Flag - Navy - British

Portland Oregonian - A publication (AD)

Port Officer

Portugal - GeoNet country code (GEON)

Portugal - NATO

Position Offered

Positive Output (SAUS)

Postal Officer (DCTA)

Postal Order

Posterior (MAE)

Post Flight Inspection - Air Force

Post Office - GeoNet geographic features code (GEON)

Post Office

Post Office Department - Canada

Postoperative - Medicine

Post Orbit - NASA

Postpay Coin Telephone - Telecommunications (TEL)

Potato - Soil biology - Human-introduced crops (QSUL)

Potential Officer - British military (DMA)

Power On (VLIE)

Power-Operated

Power Oscillator - Electronics

Power Output

Pre-Authorization Order

Precipitator Outlet (SAUS)

Predominating Organism (AAMN)

Preoperational (MCD)

Preoptic - Area of the brain

Preparation Order (SAUS)

Presbyteri Oratorii - Oratorians - Roman Catholic religious order

Presbyterorum Ordinis - Decree on the Ministry and Life of Priests - Vatican II document

Pressure Oscillation (IAA)

Pressure Oxidation (SAUS)

Preventive Officer - British (ROG)

Previous Orders - Military

Previous Owner

Primary Outlet (SAUS)

Primary Output (IAA)

Primitive data holding Object (SAUS)

Principal Officer - Foreign Service

Principal Only (EBF)

Principal Only Strip - Mortgage security

Principals Only (SAUS)

Printout

Print Output (SAUS)

Privately Owned (AFM)

Private Office - Documents issued by the Secretary General, NATO (NATG)

Privileged Operation (VLIE)

Probation Officer

Processing Office - Bureau of the Census (GFGA)

Procurement Objective (NVT)

Production Offset (AABC)

Production Order (KSC)

Professional Officer

Professor Ordinarius - Ordinary Professor - Latin (ROG)

Programmed Operation (SAUS)

Programmed Oscillator

Program Objective

Program Office - Air Force (CET)

Program Operations (COE)

Program Originator (AFM)

Project Office - or Officer - Military

Project Officer (COE)

Project ORBIS (EA)

Project Order - DoD

Project Overcome (EA)

Propeller - NCIC boat category code (NCIC)

Proposals Outstanding

Proposition One - Defunct (EA)

Propylene Oxide - Organic chemistry

Propylene Oxide Homopolymer (SAUS)

Province of Ontario - Canada

Provisioning Order (AFM)

Pseudoadiabatic Operation - Chemical engineering

Psychological Operation - Military (CINC)

Public Offering - Investment term

Public Office - British (ROG)

Public Officer (SAUS)

Public Official

Pull Out (IAA)

Pulmonary Valve Opening - Cardiology

Pulsed Carrier without Any Modulation Intended to Carry Information (IEEE)

Pulse Originating - Communications term (DCT)

Pulse Oscillator (IAA)

Pulse Output

Punching Operation (SAUS)

Punch Off (SAUS)

Punch On (VLIE)

Punch Operator (SAUS)

Punch Out - Computer science (IAA)

Punted Over - Boating - British (ROG)

Purchase Option (SAUS)

Purchase Order

Purchasing Office - DoD (AFIT)

Purchasing Officer (ALAC)

Pushout (SAUS)

Putout - Baseball

Radio Positioning Mobile Station - ITU designation - Telecommunications (CET)