There are multiple definitions:

1. atrial ectopic tachycardia(English)

   • JET
   • Cardiology, Electrophysiology

2. acid exposure time(English)

   • within IEM patients, higher AET modestly correlates with increased percentage of impaired swallows
   • ADM, EGJ, GERD, HRM, IEM, LES, PPI
   • Mouth, esophagus and stomach
   • https://doi.org…620-019-05633-3

3. adjuvant endocrine therapy(English)

   • ACT, ACTKQ, ACTION, ASK
   • Endocrinology, Therapeutic approaches
   • https://doi.org…814-022-00985-6

4. Anatomic Endodontic Technology(English)

   • GP
   • Anatomy, Dentistry, Medical technology (assessment)
   • https://doi.org…91.2006.01100.x