seoul seo • sep · · · Info · Definitions · Characters · · seoul · · Text Latin · · Script 5 · · Length 2 · · Syllables Definitions · · · (noun) the capital of South Korea and the largest city of Asia; located in northwestern South Korea. Synonyms: Seoul, capital of South Korea. · · Noun Definition 1 Characters · · e latin small letter e U+0065 l latin small letter l U+006C o latin small letter o U+006F s latin small letter s U+0073 u latin small letter u U+0075