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Definition of Ad
1. Noun. A public promotion of some product or service.
Specialized synonyms: Direct Mail, Preview, Prevue, Trailer, Advertorial, Mailer, Newspaper Ad, Newspaper Advertisement, Commercial, Commercial Message, Bill, Broadsheet, Broadside, Circular, Flier, Flyer, Handbill, Throwaway, Teaser, Top Billing
Generic synonyms: Packaging, Promotion, Promotional Material, Publicity
Derivative terms: Advertise, Advertise, Advertize
2. Adverb. In the Christian era; used before dates after the supposed year Christ was born. "In AD 200"
Definition of Ad
1. Initialism. Latin ''anno Domini'', in the year of our Lord, used to specify numbered years counting from the once estimated birth of Christ in year 1. Usually placed before years (but see notes), and always placed after centuries. Often written in small caps. This year is AD (CURRENTYEAR). ¹
2. Initialism. assistant director. ¹
3. Initialism. (military) air defence or air defense ¹
4. Initialism. antidepressant ¹
5. Initialism. (US Navy) Auxiliary Destroyer - a naval tender, a destroyer tender that tends to destroyers ¹
6. Noun. (informal) Short form of advertisement. ¹
7. Noun. (tennis) advantage ¹
8. Preposition. to, toward ¹
¹ Source: wiktionary.com
Definition of Ad
1. an advertisement [n -S] - See also: advertisement
Medical Definition of Ad
1.