OSI

communications framework model (between different systems with different standards) that includes seven layers of communications organized according to events and occurrences

OSI is primarily used as an abbreviation and has many meanings:OSI Pharmaceuticals,an American pharmaceutical companyOSI Restaurant Partners, the restaurant and entertainment group that includes Outback SteakhouseOSI Systems  a company that manufactures security scanners and medical equipment based in CaliforniaOlomouc Summer Institute, an educational program for high-school studentsOntario Swine Improvement, a pig breeding company based in Ontario, CanadaOpen Society Institute, a private charitable foundation established by George Soros to promote open societies around the worldOpen Systems InternationalOrdnance Survey of Ireland (Suirbhéireacht Ordanáis Éireann)
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Ősi is a village in Veszprém county, Hungary.
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Ordnance Survey Ireland (OSi; Irish: Suirbhéireacht Ordanáis Éireann) is the mapping agency in the Republic of Ireland. Together with the Ordnance Survey of Northern Ireland, it is the post-1922 successor to the Irish division of the United Kingdom Ordnance Survey. The Irish Survey was established in 1824, along similar lines to the Ordnance Survey in Great Britain, to provide a highly detailed (1:10560, 6 inches to 1 mile) survey of the whole of the island of Ireland, a key element in the process of equalising local taxation.
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v. dare, risk, attempt

Abbreviation for Open Systems Interconnection.

Pertaining to the logical structure for communications networks standardized by the International Organization for Standardization (ISO). Note: Adherence to the standard enables any OSI-compliant system to communicate with any other OSI-compliant system for a meaningful exchange of information.

1. <networking> Open Systems Interconnection.
2. Open Source Initiative.
(1999-12-29)