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Added 9 October 2026

ad

/æd/ noun

noun Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about ad at Wordnik → Where our words come from →

A public promotion of some product or service.

adverb

In the Christian era; used before dates after the supposed year Christ was born.
in AD 200

Origin

Clipping of advertise, advertising, advertisement, or advertiser.

From Wiktionary, via Kaikki.org (CC BY-SA)

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