T lymphocyte [T lymphocyte] n [thymus-derived] (1972): t cell
T FORMATION [T FORMATION] N (1930): AN OFFENSIVE FOOTBALL FORMATION IN WHICH THE FULLBACK LINES UP BEHIND THE CENTER AND QUARTERBACK WITH ONE HALFBACK STATIONED ON EACH SIDE OF THE FULLBACK
Meaning of T FORMATION [T FORMATION] N (1930): AN OFFENSIVE FOOTBALL FORMATION IN WHICH THE FULLBACK LINES UP BEHIND THE CENTER AND QUARTERBACK WITH ONE HALFBACK STATIONED ON EACH SIDE OF THE FULLBACK in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012