The word Dedan (Hebrew: דְּדָן Dəḏān) means "low ground". The people are called Dedanim or Dedanites.
In the Bible, it can refer to either:
Dedan, in the latter meaning, is first mentioned in the Book of Ezekiel, (Chapters 27 and 38). Chapter 27 is a roster of the trading partners of the city of Tyre (today in modern Lebanon), where Dedan is noted as a nation or kingdom which traded in saddle blankets (Ezekiel 27:20).
The oasis kingdom is also mentioned in the prophetic vision of the war of Gog and Magog (Ezekiel 38; see also, Revelation 20:8), and appears to be a nation of significance in this end-times prophecy of Ezekiel.