■ noun a very large expanse of sea, in particular, each of the Atlantic, Pacific, Indian, Arctic, and Antarctic ~s.
↘( the ~ ) N. Amer. the sea.
Derivatives
~ward adverb & adjective
~wards adverb
Origin
ME: from OFr. occean , via L. from Gk ōkeanos 'great stream encircling the earth's disc'.