ᡳᠴᡝ (ice, “new”) + ᠵᡝᠴᡝᠨ (jecen, “border; frontier”), literally “new frontier”. Compare semantically Chinese 新疆 (Xīnjiāng).
ᡳᠴᡝᠵᡝᠴᡝᠨ • (ice jecen)