There are multiple definitions:

1. European Science Foundation(English)

   • Organizations (scientific)

2. edge spread function(English)

   • PWLS

3. external skeletal fixator(English)

   • HEF, ILN, VIN
   • Orthopedics, Veterinary medicine
   • https://doi.org…0X.2004.04095.x

4. end-systolic frame(English)

   • BCE, DSC, EDF, FPS, HD, LOA, LP, LVEF, LVESV, MAD, MLP, MTT, PCK, PELoA, PLANeT, STP
   • Medical imaging, Cardiology, Signal analysis
   • https://doi.org…517-025-03510-y