Travel Industry Dictionary Find Definitions Center Rule Travel Words Start with G
A Travel Words B Travel Words C Travel Words D Travel Words E Travel Words F Travel Words G Travel Words H Travel Words I Travel Words J Travel Words K Travel Words L Travel Words M Travel Words M Travel Words O Travel Words P Travel Words Q Travel Words R Travel Words S Travel Words T Travel Words U Travel Words V Travel Words W Travel Words X Travel Words Y Travel Words Z Travel Words Number Travel Words

Define AD

AD. 1. GDS. Agent's discount. When followed by a number, indicates the percentage amount of the discount. For example: AD75 indicates a discount to travel agents of 75% off unrestricted coach fares. 2. Abr. Lat. Anno Domini, "year of our Lord." 3. Airworthiness Directive, an FAA rule regarding specific aircraft safety issues.

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