There are multiple definitions:

1. Cardiac failure, Hypertension, Age >75(English)

   • HF, ESC
   • Cardiology, Mnemonic, Hypertension, Aging

2. compound hyperopia and astigmatism(English)

   • CHAP
   • Ophthalmology

3. N6-cyclohexyladenosine(English)

   • adenosine agonist known to act by decreasing transmitter release
   • AMPA, EPSP, LTD, NMDA
   • Synapse, Depression, Brain (dys)function, Electrophysiology
   • https://doi.org…5-06-04496.1995