Meaning

noun a large body of water constituting a principal part of the hydrosphere

noun anything apparently limitless in quantity or volume

originFrom Middle English *ocean, occean, occian, occyan, from Old French occean (later reborrowed or reinforced by Middle French ocean), from Latin Ōceanus, originally from Ancient Greek Ὠκεανός (Ōkeanós, “Oceanus”, a water deity). Displaced native Old English gārseċġ. Also commonly referred to as the ocean sea, the sea of ocean (compare Latin mare ōceanum; Old French mer oceane, occeanne mer).…

Etymology from Wiktionary, CC BY-SA 3.0