dat.

noun1

1. •
   Abbreviation of dative.

noun1

1. •
   An extension for a data file.

noun4

1. •
   Digital Audio Tape, a digital data storage tape format using a dual-spooled cartridge and magnetic tape, used for digital audio and data storage.
2. •
   (US, Canada) Acronym of Dental Admission Test.
3. •
   Initialism of dolphin-assisted therapy
4. •
   Initialism of digital-asset treasury company