(often punctuated) Initialism of anno Domini (borrowed from Latin); in the year of our Lord.

(film) Initialism of assistant director. / (military) Initialism of air defence or air defense. / (pharmacology) Initialism of antidepressant.

Abu Dhabi

Abbreviation of advertisement. / Abbreviation of advertising. / Abbreviation of advertiser.

(tennis) advantage / (debating) advantage

to, toward

(no longer productive) near, at. / (no longer productive) toward, to, tendency, or addition.

a unit or set (especially of a specified number) / (medicine, anatomy) toward

(virology) Abbreviation of adenovirus.

simple past tense and past participle of add