abbr. geogr.	Huntingdonshire	Hunts.
		abbr. math.	Haarhoff-Van der Linde peak function	HVL
		abbr.	hundredweight	hwt (100 kg)
		abbr. astr. lat.	Hydra	Hya (Гидра)
		abbr. astr. lat.	Hydrus	Hyi (the Southern Serpent, Южный Змей)
		abbr. comp.	Identification & Authentication	I&A
		abbr. lat.	id est	ie (that is)
		abbr.	International Labour Organization	I.L.O
		abbr.	increased value	i.v.
		abbr.	invoice value	i.v.
		abbr.	in charge	i/c
		abbr. comp.	Internet Activities Board, includes IRTF and IETF	IAB
		abbr. comp.	Integration Access Controller	IAC
		abbr. comp.	Inter-Application Communication	IAC
		abbr. comp.	Interference Absorption Circuit	IAC
		abbr.	Immediate Access Store	IAS
		abbr. astr.	International Astronomical Union Circulars	IAUC
		abbr. lat.	ibidem	ibid. (in the same place)
		abbr. astr.	International Catalog	IC
		abbr. comp.	Iron Case	IC
		abbr. tech.	Internal Corrosion	IC
		abbr. comp.	Intelligent Communications Adapter	ICA
		abbr. comp.	Inter-application Communications Architecture	ICA
		abbr. econ.	International Cocoa Agreement	ICA
		abbr. econ.	International Coffee Agreement	ICA
		abbr. econ.	International Commodity Agreement	ICA
		abbr. econ.	International Cooperation Administration	ICA
		abbr. comp.	Independent Computer Consultants Association	ICCA
		abbr. comp.	International Council for Computers in Education	ICCE
		abbr. comp.	Information and Content Exchange	ICE
		abbr. ed.	Information Centre on Education	ICE
		abbr. comp.	Installation Checkout Package	ICP
		abbr. med.	ICP	Intracranial Pressure
		abbr. phys.	Inductively Coupled Plasma Spectrometer	ICP
		abbr. inet.	I Seek You	ICQ
		abbr. phys.	Ion Cyclotron Resonance	ICR
		abbr. tech.	Intelligible Cross-talk Ratio	ICR
		abbr. med.	International Red Cross and Red Crescent Movement	ICRM
		abbr. comp.	Intuitive Command Structure	ICS
		abbr. econ.	Investment Climate Statement	ICS
		abbr. tech.	Integrated Communication System	ICS
		abbr. comp.	Intelligent Computer System Group	ICSG
		abbr. econ.	Inter-modal Container Transfer Facility	ICTF
		abbr. lat.	idem	id. (the same)
		abbr. comp.	Interrupt Dispatch Block	IDB
		abbr. econ.	International Data Base	IDB
		abbr. econ.	Islamic Development Bank	IDB
		abbr. tech.	Insulation Displacement Connector	IDC
		abbr. comp.	International Data Communication Centre	IDCC
		abbr. lat.	on that account, for that reason	idcirco
		abbr. tech.	Instrumentation Data Collection System	IDCS
		abbr. tech.	International Direct Dialling	IDD
		abbr. tech.	Imaging and Display Device	IDD
		abbr. tech.	International Direct Distance Dialling	IDDD
		abbr. comp.	Interface Definition Language	IDL (related to COM)
		abbr. comp.	Inter-chip Digital Link	IDL
		abbr.	Integrated DataBase Management System	IDMS
		abbr.	Intelligent Data Network	IDN
		abbr. phys.	Injection Emitter Coupling	IEC
		abbr. tech.	Integrated Electronic Component	IEC
		abbr. tech.	International Electrotechnical Committee	IEC
		abbr. comp.	Internet Engineering Task Force	IETF (part of IAB)
		abbr.	Internal File-Access Block	IFAB
		abbr.	if and only if	iff
		abbr. comp.	Integrated Fibre Optic Communication Line	IFOCL
		abbr. med.	Ig	immunoglobulin
		abbr.	Intelligent Graphics Controller	IGC
		abbr.	Initial/International Graphic Exchange Specification	IGES
		abbr. comp.	Internet Group Multicast Protocol	IGMP
		abbr. med.	IGT	impaired glucose tolerance
		abbr. med.	IHSS	idiopathic hypertrophic subaortic stenosis
		abbr.	International Intellectual Property Alliance	IIPA
		abbr. inet.	If I Recall Correctly	IIRC
		abbr. chem.	Isoleucine aminoacid	Ile
		abbr. inet.	In My Arrogant Opinion	IMAO
		abbr.	immediately	imm.
		abbr.	imperative	imper.
		abbr. comp.	Information Managing System	IMS
		abbr. phys.	Ion Mobility Spectrometer	IMS
		abbr.	income	in
		abbr.	inch	ins.
		abbr.	inches	ins.
		abbr.	including	incl
		abbr.	International Commercial Terms	Incoterms
		abbr. astr. lat.	Indus	Ind (the Indian, Индеец)
		abbr. geogr.	Indonesia	Indon.
		abbr. med.	infusion	inf
		abbr.	infinitive	infin.
		abbr. med.	inhalation	inh
		abbr.	interjection	interj.
		abbr.	intransitive	intrans.
		abbr.	Institute Of Physics	IOP
		abbr.	Input/Output Supervisor	IOS
		abbr.	I/O Status Block	IOSB
		abbr. comp.	Information Provider	IP
		abbr. phys.	Induced Polarization	IP
		abbr. phys.	Initial Pressure	IP
		abbr.	Inter-Process Communication	IPC
		abbr.	Inter-Process Communication Facility	IPCF
		abbr.	Interactive Problem Control System	IPCS

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