Artificial intelligent assistant

DAT

DAT, n.
  (diːeɪˈtiː, dæt)
  Also dat.
  [Acronym f. digital audio tape s.v. digital a. 5 b.]
  Digital audio tape; a recording made in this format.

1985 New Scientist 7 Nov. 32/1 DAT makes existing audio cassette recorders obsolete. 1986 Times 3 Sept. 23/2 Dats will be a serious threat to the compact disc market. 1987 Courier-Mail (Brisbane) 5 Feb. (Blitz Suppl.) 2/1 Unlike compact discs, DAT tapes allow consumers to make their own ‘perfect sound’ dubbings, raising fears of massive copyright breaches.

Oxford English Dictionary

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