There are multiple definitions:

1. zona fasciculata(Latin)

   • one of three concentric layers in the adrenal cortex. Also denoted as zF
   • APA, ZG, zR
   • Kidney and adrenals
   • https://doi.org…ONAHA.117.09991

2. ZenFlex(English)

   • PTN
   • Dentistry
   • https://doi.org…717/peerj.15830

3. zero-forcing(English)

   • AoA, AoD, PA, APU, BS, C-MMSE, CF-MMIMO,, AI
   • Signal analysis, Artificial intelligence
   • https://doi.org…OC.2024.3393514