There are multiple definitions:

1. alternative reading frame(English)

   • a tumor suppressor protein
   • NPM1, INK4A
   • Oncology, Biochemistry
   • https://doi.org…467-024-53904-z

2. acute renal failure(English)

   • CRF, AKI, FAERS
   • Nephrology, Pathology
   • https://doi.org…al.pone.0334402

3. acute respiratory failure(English)

   • ETI, NPPV, HM, ICU
   • Pulmonology, Pathology
   • https://doi.org…90/jcdd11080246

4. auxin response factor(English)

   • Transcription
   • https://doi.org…/sciadv.adv7875

5. acoustic radiation force(English)

   • ARFI, SUSI, UEI
   • Ultrasound, Biomaterials
   • https://doi.org…bio.2025.06.007

6. adaptation recovery function(English)

   • neural adaptation recovery processes at the auditory nerve demonstrate substantial variations among human cochlear implant users. The recovery pattern can be nonmonotonic with up to three phases
   • ARR, MPI, CI
   • Adaptation & plasticity
   • https://doi.org…000000000001198

7. acute right failure(English)

   • can be defined as a rapidly progressive syndrome with systemic congestion resulting from impaired RV filling and/or reduced RV output
   • ADHF, AHF, APE, ARHF, CHAMPIT, CS, ID, NCC, RV
   • Cardiology, Pathology
   • https://doi.org…-031-96562-3_23