There are multiple definitions:

1. Food and Drug Administration(English)

   • AA, CFDA, DEA, FFDCA, MAUDE, MHRA, PMA
   • Organizations (governmental), Nutrition, Pharmacology / pharmaceutics

2. functional differential analysis(English)

   • a statistical framework that allows for the analysis of curves, images, or functions on higher dimensional domains
   • Statistics
   • https://doi.org…/bimj.202300363

3. fluorescein diacetase(English)

   • several fluorescent dyes are more reliable indicators of cell viability than the more traditional colored dyes
   • AO, PI, TB, TUNEL
   • Fluorescence, Cell biology
   • https://doi.org…2575-017-0056-3