What is the meaning of Oceanic?

Of or relating to the ocean.

Living in, produced by, or frequenting the ocean.

Resembling an ocean in vastness or extent.

Having a climate that has a relatively small difference in temperature between the warmest and coldest times of the year, and relatively high rainfall

oceanic, adj.”, in OED Online Paid subscription required, Oxford: Oxford University Press, launched 2000.

oceanic

Source: wiktionary.org