abbr.	Printer	prn
		abbr. lat.	pro tempore	pro tem. (for the time being)
		abbr. chem.	Proline aminoacid	Pro
		abbr.	process	pro
		abbr. comp.	Precision RISC Organization	PRO
		abbr.	producer	prod.
		abbr.	Programming in Logic	Prolog
		abbr. lat.	proximo	prox. (next)
		abbr.	Print Screen	PrtSc
		abbr. comp.	PostScript format	P.S.
		abbr. astr. lat.	Piscis Austrinus	PsA (the Southern Fish, Южная Рыба)
		abbr. astr. lat.	Pisces	Psc (the Fish, Рыбы)
		abbr.	Packet Switching Data Network	PSDN
		abbr.	Project Support Environment	PSE
		abbr.	Packetnet System Interface	PSI
		abbr.	pounds per sq. inch	psig
		abbr.	Processor Status Longword	PSL
		abbr.	The Phalcon/Skism Mass-Produced Code Generator	PS-MPC
		abbr. med.	PSVT	paroxysmal supraventricular tachycardia
		abbr.	Process Status Word	PSW
		abbr. med.	PT	prothrombin time
		abbr. med.	patient	pt
		abbr.	Page Table Entry	PTE
		abbr.	Public Tool Interface	PTI
		abbr.	Post, Telegraph and Telephone Administration	PTT
		abbr. phys.	Peak To Valley Ratio	PTVR
		abbr. tech.	Pan/Tilt/Zoom camera	PTZ
		abbr. astr. lat.	Puppis	Pup (the Stern, Корма)
		abbr. comp.	Packet Video Protocol	PVP
		abbr. med.	PVR	pulmonary vascular resistance
		abbr.	Parallel Worlds Developer Network	PWDN
		abbr.	Parallel Worlds Raster image	PWR
		abbr.	Plasma Wave Subsystem	PWS
		abbr.	Parallel Worlds Vector image	PWV
		abbr.	PCI extension for instrumentation	PXI
		abbr. astr. lat.	Pyxis	Pyx (the Compass, Компас)
		abbr.	question	q.
		abbr.	which see	q.v.
		abbr.	Quiesce Complete	QC
		abbr. med.	quaque die	qd (Latin)
		abbr.	quality discount agreement	qda
		abbr.	Quiesce at End of Chain	QEC
		abbr. med.	quaque hora	qh (Latin)
		abbr.	Queue Input/Output	QI/O
		abbr. med.	quater in die	qid (Latin)
		abbr.	quality	qlt y
		abbr. med.	quaque other die	qod (Latin)
		abbr. med.	quaque post meridium	qpm (Latin)
		abbr.	quart	qt
		abbr.	QuickTime Image	QTI
		abbr.	quotation	qtn
		abbr.	qualified	qual.
		abbr.	rail and air	r. & a.
		abbr.	road	r.
		abbr.	regnant	r.
		abbr.	reigned	r.
		abbr.	Royal Society of British Artists	R.B.A.
		abbr.	return cargo	r.c.
		abbr.	random value	r.v.
		abbr.	radio-active	r/a
		abbr.	Random Access Block	RAB
		abbr.	Record Access Block	RAB
		abbr.	RAM Digital-to-Analog Converter	RAMDAC
		abbr. astr.	Royal Astronomical Society of Canada	RASC
		abbr. comp.	Reliable Asynchronous Transfer Protocol	RATP
		abbr. comp.	Reliability Analysis Tool Set	RATS
		abbr.	Reliability Branching Algorithm	RBA
		abbr. med.	RBBB	right bundle branch block
		abbr. med.	RBC	red blood cells
		abbr. el.	Rectangular-bent SIL	RBS
		abbr.	Reception Centre	RC
		abbr.	Result Control Block	RCB
		abbr.	Relation Call Interface	RCI
		abbr.	received payment	rd pt.
		abbr.	Request Disconnect	RD
		abbr.	Rotating-head Digital Audio Tape	RDAT
		abbr.	Receive Data Buffer	RDB
		abbr.	Request Definition File	RDF
		abbr. comp.	Reliable Data Protocol	RDP
		abbr.	Request Definition Utility	RDU
		abbr.	Real-Time Environmental Applications and Display System	READY
		abbr.	received	recd.
		abbr.	redemption	redemon
		abbr.	rediscount	redisc
		abbr.	refunding	ref.
		abbr.	reflexive	refl.
		abbr.	Remote Graphics Instruction Set	ReGIS
		abbr.	referring to letter	relet
		abbr.	remittance	rem.
		abbr.	required	req.
		abbr. astr. lat.	Reticulum	Ret (the Grid, Сетка)
		abbr.	referring to telex	retel
		abbr.	revenue	rev
		abbr.	Raised Face	RF (flange)
		abbr.	Range Finder	RF
		abbr.	Report Footing	RF
		abbr.	Roll Film	RF
		abbr.	Response Function	RF
		abbr.	Rig Floor	RF
		abbr. med.	RF	rheumatoid factor

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