abbr.	PO	Program Region
		abbr.	POBR	Program region Base Register
		abbr. astr.	POES	Polar Orbiting Environmental Satellites
		abbr.	POH	Power On Hours
		geogr.	Pol.	Poland
		abbr.	POLR	Program Region Length Register
		abbr. tech.	POM	Peat-Oil Mixture
		abbr.	POM	Phase of Moon
		abbr.	POND	Parking Orbit Nutation Damper
		abbr. tech.	POP	Prelaunch Operations Plan
		abbr.	POP3	Post Office Protocol (version 3)
		abbr.	POPU	Pullup/Pitchdown
		geogr.	Port.	Portugal
		abbr.	PORTCEM	Portland Cement
		abbr.	POSI	Promoting Conference for OSI
		med.	postop	postoperative
		abbr.	ppm	parts per thousand (million)
		abbr.	PPM	Peak-Program Metre
		abbr.	PPM	Planned Preventative Maintenance
		abbr. O&G	PPM	proton precession magnetometer
		abbr.	PPN	Project-Programmer Number
		abbr. med.	PPNG	penicillinase-producing Neisseria gonorrhoeae
		abbr. phys.	PPR	Photopolarimeter-Radiometer
		abbr. lat.	PPS	Post PostScriptum
		abbr. tech.	PPT	Pulsed Plasma Thruster
		abbr. file.ext.	PPT	Presentations (Microsoft PowerPoint)
		abbr. phys.	PPT	Partial Pressure Transducer
		abbr. comp.	PPTP	Point-to-Point Tunnelling Protocol
		abbr. med.	PR	per rectum
		abbr. med.	PR	progesterone receptor
		abbr. med.	PR	pulmonic regurgitation
		abbr.	pr.	price
		abbr.	PrC.	private company
		abbr.	prefs	preferred shares
		med.	preop	preoperative
		abbr. file.ext.	PRG	Program source code (e.g. Clipper language, CA Clipper)
		abbr. file.ext.	PRJ	Borland C++ IDE project file (BC.EXE, BCW.EXE)
		abbr.	PRK	Program Request Key
		abbr. lat.	PRN	pro re nata (for special occasion arising)
		abbr. file.ext.	PRN	Usually printer output file
		abbr.	prn	Printer
		abbr. comp.	PRO	Precision RISC Organization
		chem.	Pro	Proline aminoacid
		lat.	pro tem.	pro tempore (for the time being)
		abbr.	prod.	producer
		abbr.	Prolog	Programming in Logic
		lat.	prox.	proximo (next)
		abbr. med.	PRSP	penicillinase-resistant synthetic penicillin
		abbr. file.ext.	PRT	P-CAD component (P-CAD)
		abbr.	PrtSc	Print Screen
		abbr. file.ext.	PS	Document in PostScript format (Adobe)
		abbr.	PS-MPC	The Phalcon/Skism Mass-Produced Code Generator
		lat.	PsA	Piscis Austrinus (the Southern Fish, Южная Рыба)
		abbr. med.	PSA	prostatic specific antigen
		lat.	Psc	Pisces (the Fish, Рыбы)
		abbr. med.	PSC	primary sclerosing cholangitis
		abbr. file.ext.	PSD	Periscope Debugger Def file (Periscope)
		abbr.	PSDN	Packet Switching Data Network
		abbr.	PSDR	public-sector debt repayment
		abbr.	PSE	Project Support Environment
		abbr.	PSECT	Program Section
		abbr. med.	PSGN	post-streptococcal glomerulonephritis
		abbr.	PSI	Packetnet System Interface
		abbr.	psig	pounds per sq. inch
		abbr.	PSL	Processor Status Longword
		abbr. file.ext.	PSM	Music format (Protracker Studio Module)
		abbr. file.ext.	PST	Postbox file (BMail)
		abbr.	PSV	public service vehicle
		med.	pt	patient
		abbr. file.ext.	PT	Kodak Precision Color Management System (KPCMS palette file)
		abbr. file.ext.	PT5	Aldus PageMaker 5.0 publication template (Aldus PageMaker)
		abbr. med.	PTA	prior to admission
		abbr. med.	PTC	percutaneous transhepatic cholangiography
		abbr.	Pth	pathology
		abbr. med.	PTH	parathormone
		abbr.	PTI	Public Tool Interface
		abbr.	Ptly.	partly (paid)
		abbr. file.ext.	PTM	Music format
		abbr. file.ext.	PTR	OS/2 cursor image file (ICONEDIT.EXE)
		abbr. med.	PTRA	percutaneous transluminal renal angioplasty
		abbr.	PTT	Post, Telegraph and Telephone Administration
		abbr. med.	PTU	propylthiouracil
		abbr. phys.	PTVR	Peak To Valley Ratio
		abbr. tech.	PTZ	Pan/Tilt/Zoom camera
		abbr.	PU	pick-up
		abbr.	Pub.Doc.	public document
		abbr. med.	PUD	peptic ulcer disease (желудка)
		lat.	Pup	Puppis (the Stern, Корма)
		abbr. file.ext.	PUT	Graphic format (WScan)
		abbr. comp.	PVP	Packet Video Protocol
		abbr. tech.	PVS	Photovoltaic System
		abbr.	PWDN	Parallel Worlds Developer Network
		abbr. med.	PWP	pulmonary wedge pressure
		abbr.	PWR	Parallel Worlds Raster image
		abbr.	PWS	Plasma Wave Subsystem
		abbr.	PWV	Parallel Worlds Vector image
		abbr.	PXBLT	Pixel Block Transfer
		abbr.	PXI	PCI extension for instrumentation
		lat.	Pyx	Pyxis (the Compass, Компас)
		abbr. file.ext.	PZI	Graphic format PZP

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