[ahd-n, eyd-n] 
| 1. | a seaport in and the economic capital of the Republic of Yemen, in the S part: formerly the center of a British colony. 318,000. |
| 2. | Colony of. Also called State of Aden. a former British colony on the Gulf of Aden and a member of the former Federation of South Arabia. 75 sq. mi. (194 sq. km). |
| 3. | Protectorate of, former name, until 1962, of the former Protectorate of South Arabia. |
| 4. | Gulf of, an arm of the Arabian Sea between the E tip of Africa and the Arabian Peninsula. |
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