1567, in the meaning defined above
Latin Ōceanus, borrowed from Greek Ōkeanós, personification of Ōkeanós "the sea flowing around the land mass of the known world" — more at ocean
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“Oceanus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Oceanus. Accessed 27 Nov. 2021.
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