(law) Abbreviation of trustee.

(music) Abbreviation of trumpet.

(medicine) Abbreviation of tinctura (Latin for “tincture”). / Abbreviation of trace. / Abbreviation of track. / Abbreviation of tragedy. / Abbreviation of train. / Abbreviation of trainee.

(grammar) Abbreviation of transitive. / Abbreviation of translated. / (music) Abbreviation of treble.

Abbreviation of translate. / (printing) Abbreviation of transpose.

Abbreviation of translator. / Abbreviation of table row.

(grammar) Abbreviation of transitive.

(US politics) Initialism of Theodore/Teddy Roosevelt, 26th US president.

Initialism of technical report; a draft technical report (usage from ISO) / (sports) Initialism of track record. / (biochemistry) Initialism of thioredoxin reductase.

(finance) Initialism of total return swap. / Initialism of tip, ring, sleeve: a type of electrical connector (TRS connector) / Initialism of Telephone Relay Service.