# Valles Marineris

> English word · Proper noun · IPA /ˈvælɪs ˌmɛəɹɪˈnɛɹɪs/

## Definitions
1. a large system of canyons on the surface of Mars; contains channels possibly caused by the flow of water

## Etymology
From Latin vallēs (“valleys”) + pseudo-Latin genitive of English mariner.

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