AT

aeronaut. abbr.

Air Temperature

biomed. abbr.

Aminotriazole

comp. abbr.

Audit Trail

electr. abbr.

Audit Trail

gen. abbr.

Air Temperature

milit. abbr.

Anti-Torpedo

naval abbr.

Atomic Time

abbr.

Advanced Technology (IBM, PC)

comp. abbr.

Advanced Technology

comp. abbr.

Attention

comp. abbr.

Azores Time (-2:00)

acronym

Atlantic Time