There are multiple definitions:

1. elevated arm stress test(English)

   • EST
   • Stress (test)

2. epilepsy, ataxia, sensorineural deafness, and tubulopathy(English)

   • see also EAST syndrome
   • Ataxia, Epilepsy or syncope, ENT, Mnemonic

3. Extrinsic Affective Simon Task(English)

   • a reaction time task that was designed to provide a measure of implicit evaluations, that is, spontaneous likes and dislikes
   • Behavior(al science), Decision making, Regulation / control, Scoring systems/scales
   • https://doi.org…19-28099-8_28-1

4. enzyme allergosorbent test(English)

   • IgE, CM
   • Allergy, Enzymes, Diagnostics
   • https://doi.org…95.2006.01193.x

5. Eastern Association for the Surgery of Trauma(English)

   • Surgery, Post-traumatic state, Organizations (documentation), Social media
   • https://doi.org…003134820942290