AT

AT or at may stand for:

• acceptance test
• Advanced Technology, in IBM PC AT
• aero triangulation

• alimentary tract
• anti-terrorism (see also: counter-terrorism)
• astatine (At), chemical symbol for the chemical element
• at
  • commercial at: the punctuation symbol "@", now principally used in e-mail addresses.
  • ATtention, part of the Hayes AT command set for modems
  • at (Unix command) to schedule tasks to be performed at a later date
• audit trail
• Austria (ISO country code)
• automatic transmission

See also: wiktionary:at