T (temperature)

T (thoracic)

T Bili (total bilirubin)

T-hold (transportation hold (law enforcement))

T.A.T. (toxin-antitoxin)

t.d.s. (to be taken three times daily)

T.I. (thoracic inlet)

t.i.d. (three times a day (L. ter in die))

t.i.n. (three times a night)

T/C (to consider)