RTT may be:

Computing

• Real-time text, text that is transmitted live while it is typed/produced.
• Real-time Timer, Timer in computer hardware used by the operation system
• Render to Texture, in computer graphics, a method of achieving renderings in a scene
• Reverse Turing test, a Turing test where the roles of humans and computers are swapped
• Round-trip delay time, in telecommunications
• 1xRTT, a mobile communications protocol

Science/Mathematics

• Ramified Theory of Types, in mathematics, a type theory by Russel and Whitehead
• Reynolds transport theorem, a fundamental theorem used in formulating the basic conservation laws of fluid dynamics

Organizations

• Recapture Tactics Team, a Marine Corps unit or element within Marine Corps Security Forces
• Régie des Télegraphes et Téléphones, previous name of Belgacom, telecom company in Belgium
• RealTime Technology, 3D visualization company, based in Munich, Germany - founded in 1999
• Registered Thai Therapist, a professional title earned by traditional Thai massage therapists
• "Research Trade Technologies, LLC" A stock research services oompany
• RTTNews, a newswire service

Other

• Race to the Top
• Real-time tactics, genre of strategy games
• Réduction du temps de travail, France's 35-hour workweek program
• Remember the Titans (2000 film), an American film featuring Denzel Washington
• Rett syndrome, a neurological disorder
• River Trade Terminal, a container terminal for river cargo in Hong Kong
• Roof top tent
• RTT, a 2009 French comedy film

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