ocean Meaning in the Cambridge English Dictionary
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Meaning of “ocean” in the English Dictionary

"ocean" in British English

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oceannoun

uk   /ˈəʊ.ʃən/  us   /ˈoʊ-/
A2 [S] a very ​largearea of ​sea: These ​mysteriouscreatureslive at the ​bottom of the ocean. [C] used in the ​name of each of the world's five ​mainareas of ​sea: the Atlantic/​Pacific/​Indian/​Arctic/​Antarctic Ocean
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(Definition of ocean from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"ocean" in American English

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oceannoun [C/U]

 us   /ˈoʊ·ʃən/
the ​largemass of ​saltwater that ​covers most of the earth’s ​surface: [U] These ​mysteriouscreatureslive at the ​bottom of the ocean. Ocean is also used in the ​name of the world’s five ​maindivisions of this ​mass of ​water: [C] the Atlantic/Pacific/​Indian/​Arctic/​Antarctic Ocean
oceanic
adjective [not gradable]  us   /ˌoʊ·ʃiˈæn·ɪk/
oceanic ​conditions
(Definition of ocean from the Cambridge Academic Content Dictionary © Cambridge University Press)
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