Means "sea" in Akkadian. In Babylonian myth Tiamat was the personification of the sea, appearing in the form of a huge dragon. By Apsu she gave birth to the first of the gods. Later, the god
Marduk (her great-grandson) defeated her, cut her in half, and used the pieces of her body to make the earth and the sky.
There were no related names found for Tiamat.