1. a country or territory ruled by a sultan
2. the position, authority, or reign of a sultan

Examples

• The Sultanate of Oman is located on the Arabian Peninsula.
• Brunei is a small but wealthy sultanate in Southeast Asia.
• The sultanate lasted for over three centuries before falling to colonial powers.
• He inherited the sultanate from his father at age twenty-five.
• The ancient sultanate controlled important trade routes through the region.
• During his sultanate, the kingdom experienced unprecedented prosperity.