set dSet to current application’s TTTDictionary’s availableDictionaries()
set dList to dSet’s allObjects()
set dNameList to {}
repeat with i in dList
　　set the end of dNameList to (i’s |name|()) as text
end repeat
dNameList
–OS X 10.10 (27 dict)
–>　　{"뉴에이스 영한사전 / 뉴에이스 한영사전", "Apple 用語辞典", "Multidictionnaire de la langue française", "राजपाल हिन्दी शब्दकोश", "Dizionario italiano da un affiliato di Oxford University Press", "Oxford-Hachette French Dictionary", "NE Ordbok", "牛津英汉汉英词典", "Oxford Thesaurus of English", "スーパー大辞林", "Oxford Dictionary of English", "Oxford American Writer’s Thesaurus", "Norsk Ordbok", "Gran Diccionario Oxford – Español-Inglés • Inglés-Español", "Wikipedia", "Duden-Wissensnetz deutsche Sprache", "Толковый словарь русского языка", "뉴에이스 국어사전", "Prisma woordenboek Nederlands", "New Oxford American Dictionary", "Dicionário de Português licenciado para Oxford University Press", "Oxford German Dictionary", "Diccionario General de la Lengua Española Vox", "ウィズダム英和辞典 / ウィズダム和英辞典", "Arkadaş Türkçe Sözlük", "พจนานุกรมไทย ฉบับทันสมัยและสมบูรณ์", "现代汉语规范词典"}

–macOS 10.12 (32 dict)
–>　　{"뉴에이스 영한사전 / 뉴에이스 한영사전", "Multidictionnaire de la langue française", "राजपाल हिन्दी शब्दकोश", "Dizionario italiano da un affiliato di Oxford University Press", "Oxford-Hachette French Dictionary", "NE Ordbok", "Apple用語辞典", "牛津英汉汉英词典", "スーパー大辞林", "Oxford Dictionary of English", "Oxford American Writer’s Thesaurus", "Gran Diccionario Oxford – Español-Inglés • Inglés-Español", "Norsk Ordbok", "Wikipedia", "Oxford Paravia Il Dizionario inglese – italiano/italiano – inglese", "Duden-Wissensnetz deutsche Sprache", "Толковый словарь русского языка", "Oxford Thesaurus of English", "TTY Dictionary", "Dicionário de Português licenciado para Oxford University Press", "New Oxford American Dictionary", "Prisma woordenboek Nederlands", "뉴에이스 국어사전", "Oxford German Dictionary", "五南國語活用辭典", "Diccionario General de la Lengua Española Vox", "ウィズダム英和辞典 / ウィズダム和英辞典", "Arkadaş Türkçe Sözlük", "พจนานุกรมไทย ฉบับทันสมัยและสมบูรณ์", "现代汉语规范词典", "Politikens Nudansk Ordbog", "Prisma Handwoordenboek Engels"}