RER
RER stands for:
-
Réseau Express Régional , in French-speaking countries the common name for S-Bahn-like suburban rail transport systems
- especially for the Réseau express régional d'Île-de-France in the region around Paris
- occasionally as an abbreviation for the Ravenglass and Eskdale Railway in Great Britain
rER stands for:
- Rough endoplasmic reticulum , a membrane system in cells
rer stands for:
- rerum (Latin), denotes the subject area for academic degrees (e.g. Dr. rer.nat. - Doctor of Natural Sciences)
RER stands for:
- Respiratory Exchange Ratio, English for respiratory quotient
