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OI ['ɔɪ] abbr.
abbr.	Obsessive Influence; Orders In; oxygen-index
abbr., auto.	over drive inhibit
abbr., avia.	ATS OI; ATS operating irregularity; operating irregularity; oil insulated; on instrument; operational interruption
abbr., chem.	oil immersed
abbr., earth.sc.	odor intensity; optimal interpolation method; optimization index; optimum initialization
abbr., ed.	Office of Investigation
abbr., el.	optical image; optical information; optical instrument; optical interconnection; opto-isolator; orbit insertion; OR-inverter; overflow interrupt; overrun interrupt; oxide isolation
abbr., el., scient.	Opto Isolator
abbr., electr.eng.	oil-immersed; oil-insulated; oscillatory instability
abbr., environ.	occurrence index
abbr., fin.	other income (Метран); open interest
abbr., fire.	oxygen index (iso.org Natalya Rovina)
abbr., IT	Object Interface
abbr., law	Overseas Indians (ladyjane85)
abbr., Makarov.	orbiter instrumentation
abbr., meteorol.	opportunistic infection; Adair-Dighton syndrome (MichaelBurov); imperfect osteogenesis (MichaelBurov); optical imaging (оптическая визуализация Nata T); osteogenesis imperfecta (несовершённый остеогенез Dimpassy); osteogenesis imperfecta (MichaelBurov); brittle bone disease (MichaelBurov); brittle bone syndrome (MichaelBurov); Van der Hoeve's syndrome (MichaelBurov); Ekman-Lobstein syndrome (MichaelBurov); Lobstein syndrome (MichaelBurov); opsonic index; ouabain-insensitive; osteopsathyrosis
abbr., mil.	Out Of Iraq; Office of Intelligence (USCS); operating instruction; operational interest
abbr., mil., avia.	office instruction
abbr., nautic., scient.	Optimum Interpolation
abbr., oil	oxygen index; oil-immersion; Oilfield Improvements, Inc.; operating instructions; output impedance
abbr., SAP.	operational integrity (эксплуатационная надежность; эксплуатационная пригодность nikolkor)
abbr., space	optical indicator; optoelectronic indicator; orbit injection; overload indicator
abbr., st.exch.	Owens Illinois, Inc.
abbr., surg.	omental infarction (инфаркт сальника doc090)
abbr., tech.	operations instructions; operation instructions; operator interface (warsheep)
abbr., tradem.	Omega Intertainment
energ.ind., abbr.	oustanding item
mil., abbr.	office of information; omnibearing indicator; operational instrumentation; operational intelligence
tech., abbr.	optical identification; optical isolator; overhaul instruction
Oi ['ɔɪ] abbr.
abbr., el.	integrated oxygen control; interstitial oxygen
oi ['ɔɪ] int.
gen.	an expression of surprise (Oi! This is new! wiktionary.org)
inf.	an informal greeting, similar to hi (Oi! How's it going? wiktionary.org)
rude, brit.	hey (Britain, Ireland, New Zealand, South Africa, usually impolite; Said to get someone's attention: Oi, you with the red hat – what do you think you're doing? • Oi! Stop that! wiktionary.org)