Merathaim

Boyd’s Bible Dictionary:

(double rebellion). Symbol of Chaldea (Jer. 50:21).

Concise Bible Dictionary:

Symbolical name given to the country of the Chaldeans, signifying “double rebellion,” perhaps alluding to the double captivity of the Israelites by Chaldea (Jer. 50:21; compare Jer. 50:25).

Strong’s Dictionary of Hebrew Words:

Transliteration:
Mrathayim
Phonic:
mer-aw-thah’-yim
Meaning:
dual of 4751 feminine; double bitterness; Merathajim, an epithet of Babylon
KJV Usage:
Merathaim

Jackson’s Dictionary of Scripture Proper Names:

double rebellion: double bitterness

Potts’ Bible Proper Names:

Double rebellion; double bitterness; great domination:―symbolical of Babylon, Jer. 50:21. {Gemina rebellio}