noun: (historical) Initialism of Soviet Socialist Republic. [(historical, government) Any of the republics belonging to the former Soviet Union.]
noun: (aviation) Initialism of secondary surveillance radar.
noun: (electronics) Initialism of solid-state relay.
noun: (US, military, nautical, obsolete) Initialism of Sub Surface Radar — a radar picket submarine.
noun: (aviation, travel industry) Initialism of special service requirement (or Request). [(aviation, travel industry) A request for special treatment for a passenger such as a special diet or mobility assistance, sent from an agent to an airline, to which a reply will be returned.]
noun: (statistics) Initialism of sum of squared residuals.
noun: (web development) Initialism of server-side rendering. [(web development) A system in which the content of a website is generated on the server, before being sent to the browser.]
noun: (education) Initialism of sustained silent reading.
noun: (nautical) Initialism of Small Ships Register.
noun: (military) Initialism of Special Support and Reconnaissance.
