What is "anshar"

In the Sumerian, Akkadian, Assyrian and Babylonian creation myth Enuma Elish, Anshar (also spelled Anshur ), which means "whole heaven", is a primordial god. His consort is Kishar which means "Whole Earth". They were the children of Lahamu and Lahmu and the grandchildren of Tiamat and Apsû. They, in turn, are the parents of Anu, the god of heaven, lord of constellations, king of gods, spirits and demons.

If this name /Anšar/ is derived from */Anśar/, then it may be related to the Egyptian hieroglyphic /NṬR/ ("god"), since hieroglyphic Egyptian /Ṭ/ may be etymological */Ś/.