(taxation) Initialism of tax deducted at source. / (publishing, R&D, uncountable) Initialism of technical documentation service. / (communication, uncountable) Initialism of time-driven switching.

(water supply) Initialism of total dissolved solids.

(medicine) to be taken three times daily

plural of TD

(American football, Canadian football) Abbreviation of touchdown. / (neurology) Initialism of tardive dyskinesia. / (travel) Initialism of ticket designator. / (video games) Initialism of tower defense.

Abbreviation of table data. (standard cells that contains data, no table headers)

plural of TD Banker

(rare) Someone who holds an account at any of several banks called TD Bank.

Abbreviation of Toronto District School Board.