There are multiple definitions:

1. antiparietal cell antibody(English)

   • Immunology

2. American Psychiatric Association(English)

   • DSM-IV, NICE, DSM-IV-TR, EPA
   • Psychiatry, Organizations (scientific)

3. American Psychological Association(English)

   • BPS
   • Psychology, Organizations (scientific)

4. antiphospholipid antibody(English)

   • APS, APOH

5. acid:polyamine antiporter(English)

   • BCCT, NSS, SAD, SSS

6. action potential amplitude(English)

   • AP, APD
   • Electrophysiology
   • https://doi.org…2999(00)00591-4

7. aldosterone-producing adenoma(English)

   • a major subtype of primary aldosteronism, and caused by excessive aldosterone production from the adrenal cortex
   • NGS, PA, ALD, CPA, DAB2, NFA, ZG
   • Gland(ular), Oncology, Kidney and adrenals, Hormone, Hypertension
   • https://doi.org…ONAHA.119.14177
   • https://doi.org…5/s-0043-100935

8. aminopeptidase A(English)

   • APN
   • Hypertension
   • https://doi.org…srev.00041.2022

9. adapted physical activity(English)

   • may attenuate loss of motor function and delay, or even reverse muscle wasting
   • CD68, FSHD
   • Physical therapy, Myocyte / muscle, Exercise & Training, Fatigue
   • https://doi.org/10.1113/JP287033