Idumea is another form of Edom, meaning the land or people associated with Esau.
Definition
Idumea is another form of Edom, the name associated with the land and people connected with Esau. The name is explained as meaning “red.”
Biblical Usage
Idumea is used as an alternative form of the name Edom.
Historical Bible Dictionaries
Smith's Bible Dictionary
(red). [Edom, Idumaea Or Idumea]