A surname originating as a patronymic.

(tennis) advantage to the server

plural of Adelie

(virology) Abbreviation of adenovirus.

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

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

Abbreviation of adaptation. / Abbreviation of adapter. / Abbreviation of archdiocese. / (grammar, also spelt adv(.)) Abbreviation of adverb. / (also spelt ad) Abbreviation of advertisement.

Abbreviation of adapt. / Abbreviation of adapted. / (imperative, medicine, in prescriptions, also spelt add.) Abbreviation of addantur.

Obsolete form of Hades.

(Britain, dialectal or slang) Alternative form of had