From Longman Dictionary of Contemporary EnglishDATDAT /dæt/ noun [uncountable] TCR (digital audio tape) a system used to record sound or information in digital form
Examples from the Corpus
DAT• Promenade also boast a digital editing system to cater for DAT.• If the data is smartly compressed, one DAT purchased at K-Mart can hold about 10,000 books in digital form.• One DAT can also completely cloak a smaller library of information interleaved within the music. 