t

T is the 20th letter of the Latin alphabet. Its name is pronounced “tee” in English. The uppercase form consists of a vertical stroke with a crossbar, while the lowercase is a small vertical line with a rounded top. The letter originated in the Phoenician letter taw and was adopted by the Greeks as tau (Τ) before entering Latin script. It has variants in other alphabets and scripts.

T is widely used as a symbol across disciplines. In physics and chemistry, T denotes temperature. In thermodynamics and chemical equations, it is a common shorthand for temperature. In electromagnetism, the tesla, the unit of magnetic flux density, uses the symbol T. The SI prefix for 10^12 is tera, abbreviated T, as in terabyte. In mathematics, T denotes the transpose of a matrix, written A^T; in statistics, the T-distribution arises in small-sample inference. In genetics, T stands for thymine, one of DNA’s four bases. In programming, T is often used as a conventional name for a type parameter in generic constructs.

In notation and linguistics, T appears in various combinations and digraphs within orthographies. It also serves as a symbol in numerous abbreviations and acronyms across domains, including temperature, mathematical notation, and the unit tesla. The letter’s frequency and versatility make it a common reference point in discussions of alphabets, notation, and symbolic systems.