abbr. phys.	IEC	Injection Emitter Coupling
		abbr. med.	IFA	immunofluorescent assay
		abbr.	IFAB	Internal File-Access Block
		abbr. file.ext.	IFF	Graphic format (Amiga)
		abbr. file.ext.	IFF	Interchange Format File
		abbr.	iff	if and only if
		abbr. comp.	IFOCL	Integrated Fibre Optic Communication Line
		abbr.	IGC	Intelligent Graphics Controller
		abbr.	IGES	Initial/International Graphic Exchange Specification
		abbr. comp.	IGMP	Internet Group Multicast Protocol
		abbr.	IIPA	International Intellectual Property Alliance
		chem.	Ile	Isoleucine aminoacid
		abbr. tech.	IMARE	Institute of Marine Engineers
		abbr. file.ext.	IMG	Graphic format (Ventura)
		abbr.	imm.	immediately
		abbr.	imper.	imperative
		abbr. comp.	IMS	Information Managing System
		abbr. file.ext.	INC	Assembler include file (MASM)
		abbr.	incl	including
		abbr.	Incoterms	International Commercial Terms
		lat.	Ind	Indus (the Indian, Индеец)
		abbr.	INDEO	Intel Video
		abbr.	indic.	indicative
		geogr.	Indon.	Indonesia
		med.	inf	infusion
		abbr. file.ext.	INF	Any information
		abbr. file.ext.	INF	OS/2 hypertext help system file (VIEW.EXE)
		abbr.	infin.	infinitive
		med.	inh	inhalation
		abbr. file.ext.	INI	File with initialization information
		abbr.	INITS	Initiate Self
		abbr. file.ext.	INS	Ensoniq Instrument File (Ensoniq)
		abbr.	ins.	inch
		abbr.	ins.	inches
		abbr.	Insp. Gen.	inspector general
		abbr.	interj.	interjection
		abbr.	intrans.	intransitive
		abbr.	IOC	indirect operating cost (s)
		abbr. file.ext.	ION	Files descriptions (e.g. descript.ion, DosNavigator)
		abbr.	IOS	Input/Output Supervisor
		abbr.	IOSB	I/O Status Block
		abbr. comp.	IP	Information Provider
		abbr. phys.	IP	Induced Polarization
		abbr. phys.	IP	Initial Pressure
		abbr. comp.	IP-SLIP	Serial Line Internet Protocol
		abbr.	IPC	Inter-Process Communication
		abbr.	IPC deposits	deposits of individuals
		abbr.	IPC deposits	partnerships and corporations
		abbr.	IPCF	Inter-Process Communication Facility
		abbr. med.	IPG	impedance plethysmography
		abbr.	IPLV	averaged partial load
		abbr.	IPO	Input-Process-Output
		abbr. tech.	IPT	Institution of Petroleum Technologists
		abbr. physiol.	IPT	Individual Perception Threshold
		abbr. comp.	IPU	Integer Processing Unit
		abbr.	IPU	Interparliamentary Union
		abbr.	IR-CON	Infra-Red Connector
		abbr. astr.	IRAF	Image Reduction and Analysis Facility
		abbr.	ired .	irredeemable
		abbr.	IRG	InterRecord Gap
		abbr.	IRGB	Intensity Red Green Blue
		abbr.	IRI	industrial risk insurance
		abbr. comp.	IRTF	Internet Research Task Force (part of IAB)
		abbr. comp.	IRTP	Internet Reliable Transaction Protocol
		abbr. comp.	IS	Interrupt Stack
		comp.	IS/A AMPE	Inter-Service/Agency Automatic Message Processing Exchange
		abbr. astr.	ISA	Institute of Space Astrophysics
		abbr. comp.	ISA	Intelligent Scheduling Assistant
		abbr.	ISD	Image Section Descriptor
		abbr.	ISECT	Image Section
		abbr. comp.	ISF	Information Security Foundation
		abbr. econ.	ISLP	Investment Sector Loan Program
		abbr. comp.	ISLS	Infinite State Logic Simulator
		abbr. tech.	ISM	Image-Suppression Mixer
		abbr. econ.	ISNAR	International Service for National Agricultural Research
		abbr. comp.	ISP	Indexed Sequential Processing
		abbr. comp.	ISP	Integrated Software Package
		abbr. tech.	ISP	Industrial Space Platform
		abbr. tech.	ISP	Intermediate Strength Proppant
		geogr.	Isr.	Israel
		abbr.	iss.	issued
		abbr. astr.	ISTP	International Solar-Terrestrial Physics Project
		abbr. inet.	ISTR	I Seem To Recall
		abbr. inet.	ISWYM	I See What You Mean
		abbr. med.	IT	intrathecal
		abbr. tech.	IT	Industrial Technology
		abbr. tech.	IT	Inter-digital Transistor
		abbr.	ITC	infantry training centre
		abbr. phys.	ITDS	Ion Trap Mass Spectrometer/Detector
		abbr. comp.	ITU-T	ITU - Telecommunications
		abbr. med.	IUCC	International Union Against Cancer
		geogr.	Iv. Cst.	Ivory Coast
		abbr.	IVP	Installation Verification Procedure
		abbr.	IVP	Instant Virus Production Kit
		abbr.	IWW	inland waterways
		abbr. phys.	IXA	Ion-excited X-ray Analysis
		abbr. phys.	IXAS	International X-ray Analysis Society
		abbr. comp.	IXC	Inter-Exchange Carrier
		abbr.	J2K	JPEG 2000 (graphics format)
		abbr. file.ext.	JAM	Jam message base (FTN software)

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