Ad
来自Big Physics
mid 19th century: abbreviation.
wiktionary
Clipping of advertise, advertising, advertisement, advertiser
From a shortening of the word advantage.
From Latin ad(“to, on”).
etymonline
ad (n.)
abbreviation of advertisement, attested by 1841. Long resisted by those in the trade, and according to Mencken (1945) denounced by William C. D'Arcy (president of Associated Advertising Clubs of the World) as "the language of bootblacks, ... beneath the dignity of men of the advertising profession."
