Valles Marineris

English

Etymology

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

Pronunciation

• IPA^(key): /ˈvælɪs ˌmɛəɹɪˈnɛɹɪs/

Proper noun

Valles Marineris

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