There are multiple definitions:

1. event-related synchronization(English)

   • BCI, CSP, EEG, ERD
   • Electrophysiology, Brain-computer interface

2. European Respiratory Society(English)

   • prioritizes science, education and advocacy in order to promote lung health, alleviate suffering from disease and drive standards for respiratory medicine globally
   • BEAR
   • Respiratory system, Organizations (scientific)
   • https://www.ersnet.org/

3. estrogen receptor score(English)

   • ER, MKS
   • Estrogen, Scoring systems/scales, Oncology
   • https://doi.org/10.1186/bcr3481

4. early repolarization syndrome(English)

   • demonstrated as J-point elevation on an electrocardiograph, and can be linked to a considerable risk of life - threatening arrhythmias and sudden cardiac death
   • ER, SCD
   • Cardiology, Electrophysiology
   • https://doi.org…0/wjc.v7.i8.466

5. endoplasmic reticulum stress(English)

   • the unfolded protein response exacerbates the inflammatory response of adipose tissue by interfering with the normal metabolism of adipose tissue, promotes the secretion of adipokines, and affects the browning and thermogenic pathways of adipose tissue, ultimately leading to the manifestation of metabolic syndrome such as ectopic lipid deposition and disorders of glucolipid metabolism in obese patients
   • ER, UPR
   • Adiposity, Stress (test), Metabolism
   • https://doi.org…47/IJGM.S428482