OSI

Proper Noun

• Initialism of open An International Standard [[ISO/IEC 7894:1994(E) subtitled Basic Reference Model. A four-part document that contains a formal description of an idealized computer network architecture. The document is also published as ITU-T Recommendation X.200
• Initialism of Other Supplementary Information A message sent to an airline by an agent, in a standardised format, advising relevant information such as being a VIP, language difficulty, or passport information.
• Initialism of w:Open Source Initiative
• Initialism of w:Office of Special Investigations