A T-shirt, often sold as a souvenir at musical concerts featuring rock groups, containing images and information about the performing artist or band, the tour the performer(s) may be on, and tour dates and venues.

(immunology) A cytotoxic T cell.

plural of killer T cell

Alternative spelling of WRT

plural of cytotoxic T cell

(immunology) A subtype of T cell, capable of inducing death in infected somatic or tumor cells.

The geological signature of the transition between the Cretaceous period and the Tertiary period 65.5 million years ago.

plural of T-bone steak

(historical cartography) A type of mediaeval map of the world, representing only the top half of a spherical Earth.

(sociolinguistics) The distinction between a formal and an informal second-person pronoun in some languages.