What is the origin of word oceanography?

The word "oceanography" comes from the combination of two Greek words:

* Okeanos (Ωκεανός): This refers to the primordial ocean in Greek mythology, a vast river encircling the Earth.

* graphein (γράφειν): This means "to write" or "to describe".

Therefore, "oceanography" literally means "the description of the ocean".