Tourette syndrome, a neurological condition involving involuntary tics

Toy Story, an animated feature film

Turbine Ship, steamships powered by the steam turbine

Transsexual, a person who identifies as the gender opposite to the sex assigned to them at birth

Tomorrow series, Australian novels

Turner syndrome, a group of chromosomal abnormalities

Twisted Sister, a New York city heavy metal band

Tegan and Sara, Canadian singer-songwriters

Theosophical Society, an organization to advance the doctrine of Theosophy

Tuberous sclerosis, a disease that causes benign tumours in the brain and on other organs

Terminal Services, a component of Microsoft Windows operating systems

The Specialists, a multiplayer mod for the popular first-person shooter computer game Half-Life

Tiberian Sun, a computer game in the Command & Conquer series

Totally Spies, a French anime-influenced animated television series

Tidewater Southern Railway, a short line railroad in Central California

Tensile strength, a measures of the force required to pull something

Air Transat IATA code

MPEG transport stream (.ts), communications protocol for audio, video, and data

Twin Spark, an engine technology usually in the context of Alfa Romeo cars

TeamSpeak, a voice chat software

Voiceless alveolar affricate, in linguistics, a type of consonantal sound

Tenor saxophone, musical instrument, reeds

Thymidylate synthase, the enzyme used to generate thymidine monophosphate

Train simulator, a computer program that simulates rail transport operations

Ts (digraph), in the Latin alphabet

Terror Squad, a New York hip hop crew and a record label

TechSpot, an online computer enthusiast magazine

Tosyl in chemistry, combines the toluene and sulfonyl functional groups

Teaspoon, as a unit of volume in cooking

Treaty series, a collection of United States treaties published by the US Department of State

Top Secret, a security classification

Telesync, a movie piracy method

Tenaris TS: NYSE, a global manufacturer of steel pipe products

Transaction server, a software component that is used in implementing transactions