# Rupelian

> English word · Proper noun

## Definitions
1. A subdivision of the Oligocene epoch.

## Etymology
Rupel + -ian, after the river Rupel in Belgium.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/rupelian