Easton's Bible Dictionary (1897)
The wife of Moses (Num. 12:1). It is supposed that Zipporah, Moses’ first wife (Ex. 2:21), was now dead. His marriage of this “woman” descended from Ham gave offence to Aaron and Miriam.
Smith's Bible Dictionary (1863)
The wife of Moses is to described in (Numbers 12:1) She is elsewhere said to have been the daughter of a Midianite, and in consequence of this some have supposed that the allusion is to another wife whom Moses married after the death of Zipporah.
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
ETHIOPIAN WO'MAN, the name by which the wife of Moses is called in Num 12:1. She was probably his second wife, married after the death of Zipporah, who was a Midianite.