There are multiple definitions:

1. Algemeen Ziekenhuis(Belgian Dutch)

   • UMC
   • Hospital

2. active zone(English)

   • presynaptic structures mediating neurotransmitter release
   • AMPA, ANF, CF, Cm, EPSC, IHC, OHC
   • Auditory system, Neurology, Electrophysiology
   • https://doi.org/10.1113/JP279189

3. acetazolamide(English)

   • a carbonic anhydrase inhibitor used for preventing altitude illness. It attenuates hypoxic pulmonary vasoconstriction (HPV) while improving oxygenation
   • HPV, MZ, PASP
   • Oxygen, Pulmonology
   • https://doi.org…siol.00544.2018