Definition of "ATA"

(computing) Advanced Technology Attachment; a computer bus technology primarily designed for transfer of data to and from a hard disk. (Renamed PATA when SATA came into existence to more clearly distinguish the two.)  examples

Initialism of anti-transglutaminerase antibody.  examples

(martial arts) Initialism of American Taekwondo Association.  examples

(tennis) Initialism of American Tennis Association.  examples

(astronomy) Initialism of Allen Telescope Array.  examples

Initialism of American Telemedicine Association.  examples

(UK) Initialism of Automotive Technician Accreditation.  examples

(Canada) Initialism of Alberta Teachers' Association, a trade union in Alberta  examples