There are multiple definitions:

1. Foundation for Biomedical Research(English)

   • Bioengineering, Organizations (research), Experimental animal
   • https://en.wiki…edical_Research

2. fractional breakdown rate(English)

   • FSR
   • Metabolism
   • https://www.met…(09)00133-4/pdf

3. federal benefit rate(English)

   • program that has been proposed by some analysts as a potentially attractive basis of establishing a new minimum benefit for Social Security
   • SSI
   • Financial issues
   • https://pubmed.…h.gov/18605217/

4. foreign body response(English)

   • critical structural interfaces formed between multielectrode array implants and the brain parenchyma remain elusive
   • gMμE, MEA, PPMP
   • Electrophysiology, Materials science
   • https://doi.org…ins.2021.764448