English

exo-ocean

From exo- + ocean.

Formed from exo- + ocean

Proto-Indo-European *h₁eǵʰs ‘out of’

Proto-Hellenic *eks

Ancient Greek ἐκ ‘Out of, from’

Ancient Greek ἔξω ‘outer’

English exo-

Ancient Greek Ὠκεανός ‘Oceanus; the world-encircling river’

Latin Ōceanus ‘ocean’

Old French occean

Middle English occean

English ocean

Today it means

noun An ocean on a planet other than Earth.

Language periods are conventional ranges, not dates for this word.

Etymograph / exo-ocean