Definition of "T"

The twentieth letter of the English alphabet, called tee and written in the Latin script.  examples

The ordinal number twentieth, derived from this letter of the English alphabet, called tee and written in the Latin script.  examples

(ratings) Teen.  examples

(finance) Taxable.  examples

American Library Association abbreviation of twentieth, a book size range (12.5-15 cm in height).  examples

Transgender (TG) or transsexual (TS) (sometimes used in contrast to cisgender M or F; compare NB).  examples

(informal) A T-shirt.  quotations  examples

Abbreviation of Tuesday.  examples

Abbreviation of Thursday.  examples

(music) Tenor.  examples

(automotive) The Ford Motor Company's Model T automobile.  examples

(rail transport, in multiple unit formations) Trailer car.  examples

(informal, with the) The Massachusetts Bay Transportation Authority, or MBTA; specifically, the subway or train.  examples

(sports) Abbreviation of ties (statistic).  examples

(basketball) A technical foul.  examples

Testosterone.  examples

(medicine) A T wave.  quotations  examples

(immunology) A T cell.  quotations

(construction) A T-beam.  examples

(nautical, historical) Abbreviation of temperance; marked in the ship's books when a sailor chose money instead of the daily rum ration.

(stock ticker symbol) AT&T.  examples

(informal, with the) The roughly T-shaped rural part of Pennsylvania, located between Philadelphia and Pittsburgh.  examples

(stenoscript) the prefix trans-.  examples