RER
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RER
Where it comes from
From French RER, often reinterpreted as "Regional Express Rail".
noun RERs
- A type of railway system that generally runs from suburbs or satellite towns into a city centre, with a central tunnel or overground corridor with higher speeds and more widely spread stations than a subway or metro. […] the recently approved Crossrail link, together with the existing Thameslink, constitute the basis of an RER for London, which by the end of this decade will provide a single system, linking Reading with Colchester and Cambridge[…]
proper noun RERs
- Any of many RER systems in French-speaking countries.
- GO Expansion, a project to improve commuter rail in Ontario. GO Transit also uses some tunnels in the city. Its Metrolinx RER programme includes laying 150km (93 miles) of new track, and some of this, for example under Highways 401 and 409, will be in tunnel.
Talk about this word "RER." Wiktionary, via Micwyn, micwyn.com/word/rer. Accessed 6 Nov. 2026. RER. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/rer "RER." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/rer.Cite this
@misc{rer_2026,
title = {RER},
howpublished = {Wiktionary, via Micwyn},
year = {2026},
url = {https://micwyn.com/word/rer},
urldate = {2026-11-06}
}
