OSI

(networking)Open Systems Interconnection.

OSI

(2)Open Source Initiative.

OSI

(1) (Open System Interconnection) An ISO standard for worldwide communications that defines a protocol framework in seven layers. OSI functionality exists in all communications systems, although two or three layers may be incorporated into one (see OSI model). Control is passed from the top application layer to the bottom layer, out over the network to the bottom layer of the receiving station and back up to the application layer.

Never Completely Defined
OSI was too loosely defined to become a single standard. Nevertheless, the model serves to teach communications. Compare TCP/IP, the global standard, with the OSI model (see OSI model and TCP/IP).

(2) (Open Source Initiative) A non-profit corporation dedicated to promoting open source software. The OSI logo on software certifies that it is distributed under one of several approved licenses. For more information, visit www.opensource.org. See open source.

An Approved License

This logo can be used if software is distributed under one of several licenses approved by the Open Source Initiative.

OSI

Acronym	Definition
OSI➣Open Systems Interconnection
OSI➣Office of Special Investigations
OSI➣Open Society Institute
OSI➣Open Source Initiative
OSI➣Online Software
OSI➣Office of Strategic Influence (band)
OSI➣Ordnance Survey Ireland (est. 1824)
OSI➣Operating System Independent (computing)
OSI➣Other Service Information
OSI➣Open Systems International (Minneapolis, MN)
OSI➣Osram Sylvania Inc.
OSI➣Overflow Stack Immediate
OSI➣Officina Stampaggi Industriali
OSI➣Operational Stress Injury
OSI➣Outsource Strategies International (Tulsa, OK)
OSI➣Open System Interface
OSI➣Optical Scientific, Inc. (Gaithersburg, MD)
OSI➣Outsourcing Solutions Inc.
OSI➣Outback Steakhouse, Inc.
OSI➣Outsourcing Services India
OSI➣Out of Stock Indefinitely (usually referring to books)
OSI➣Options Symbology Initiative (Options Clearing Corporation)
OSI➣Operating System Installer
OSI➣On-Site Inspection
OSI➣Office of Scientific Intelligence
OSI➣Oil States Industries (Oil States International)
OSI➣Office of Science and Innovation
OSI➣Office of Strategic Initiatives
OSI➣Office of Scientific Investigation (aka Office of Scientific Intelligence; fictional agency; Six Million Dollar Man and Bionic Woman)
OSI➣Open Systems, Inc.
OSI➣Office of School Improvement
OSI➣Office of Strategic Information
OSI➣Objective Systems Integrators, Inc.
OSI➣Office of Secret Intelligence (fictional, Venture Brothers)
OSI➣Organ Supply Industries (Erie, PA)
OSI➣Office of Scientific Information
OSI➣Other Similar Incidents
OSI➣Open Switching Interval
OSI➣On-Schedule Indicator (advertising)
OSI➣Other Specified Items (earnings)
OSI➣Operational Subsystem Interface (US DoD)
OSI➣Open System Integration
OSI➣Ontario Swine Improvement Inc. (Ontario, Canada)
OSI➣Origo Sino-India PLC (UK)
OSI➣Ounces per Square Inch
OSI➣Operator System Interface
OSI➣Other Supplemental Information
OSI➣Open Systems Interoperability
OSI➣Open Standard Interconnection
OSI➣Office of Statewide Intelligence (FDLE)
OSI➣Optical Storage International
OSI➣Operations System Interface
OSI➣Operating Space Item
OSI➣Oponix Systems Inc.
OSI➣Organizational Strategies, Inc. (Arlington, VA)
OSI➣Origin Systems Incorporated
OSI➣Open Sources InfoWorld
OSI➣Occupational Stress Injury (psychological difficulty)
OSI➣Other Security Interests
OSI➣Offshore Systems, Inc
OSI➣Operational Support Inventory
OSI➣Online Social Interaction
OSI➣Originating Station Identifier
OSI➣One Side Installation
OSI➣Optimum Source Impedance
OSI➣Congregatio Oblatorum Sancti Ioseph (religious order, Oblates of St. Joseph)