The branch of science concerned with the physical and biological properties and phenomena of the ocean. Cf. oceanology, n.

= oceanography, n. Also: spec. the branch of technology and economics concerned with human use of the ocean.

= thalasso-, comb._form, as in thalattocracy n. Brit./ˌθaləˈtɒkrəsi/ U.S./ˌθæləˈtɑkrəsi/ also thalattokraty Brit./ˌθaləˈtɒkrəti/…

The branch of physical geography which treats of the sea, its configuration and phenomena; oceanography.