tS

Ts is a two-letter sequence that appears in several distinct domains. In linguistics, ts denotes a voiceless alveolar affricate [t͡s], represented in some orthographies as the digraph "ts". The sound occurs in loanwords and native terms across various languages and systems of transcription.

In language codes, ts is the ISO 639-1 code for Tsonga (Xitsonga), a Bantu language spoken in southern Africa.

In chemistry, Ts is the symbol for the element tennessine, atomic number 117, a halogen discovered in the 2010s and named for Tennessee.

In units, Ts is the symbol for terasecond, equal to 10^12 seconds, according to SI conventions; usage is rare outside specialist contexts.

In computing and media, .ts is a common file extension. It is used for MPEG-2 transport streams in broadcasting and streaming, and for TypeScript source code files in software development.

Other uses include abbreviations such as time stamp or time series in data contexts, typically written as TS in uppercase.