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An electronic dictionary is a dictionary whose data exists in digital form and can be accessed through a number of different media.〔Nesi, H., 'Dictionaries in electronic form', in Cowie, A.P. (Ed.), ''The Oxford History of English Lexicography'', Oxford University Press 2009: 458-478〕 Electronic dictionaries can be found in several forms, including: *as dedicated handheld devices *as apps on smartphones and tablet computers or computer software *as a function built into an E-reader *as CD-ROMs and DVD-ROMs, typically packaged with a printed dictionary, to be installed on the user’s own computer *as free or paid-for online products == Overview == Most types of dictionary are available in electronic form. These include general-purpose monolingual and bilingual dictionaries, historical dictionaries such as the ''Oxford English Dictionary'', monolingual learner's dictionaries, and specialized dictionaries of every type, such as medical or legal dictionaries, thesauruses, travel dictionaries, dictionaries of idioms, and pronunciation guides. Most of the early electronic dictionaries were, in effect, print dictionaries made available in digital form: the content was identical, but the electronic editions provided users with more powerful search functions. But soon the opportunities offered by digital media began to be exploited. Two obvious advantages are that limitations of space (and the need to optimize its use) become less pressing, so additional content can be provided; and the possibility arises of including multimedia content, such as audio pronunciations and video clips.〔De Schryver, Gilles-Maurice, ‘Lexicographers’ dreams in the electronic dictionary age’, in ''International Journal of Lexicography'', 16(2), 2003:143-199〕〔Atkins, S. & Rundell, M. ''The Oxford Guide to Practical Lexicography'', Oxford University Press 2008: 238-246〕 Electronic dictionary databases, especially those included with software dictionaries are often extensive and can contain up to 500,000 headwords and definitions, verb conjugation tables, and a grammar reference section. Bilingual electronic dictionaries and monolingual dictionaries of inflected languages often include an interactive verb conjugator, and are capable of word stemming and lemmatization. Publishers and developers of electronic dictionaries may offer native content from their own lexicographers, licensed data from print publications, or both, as in the case of Babylon offering premium content from Merriam Webster, and Ultralingua offering additional premium content from Collins, Masson, and Simon & Schuster, and Paragon Software offering original content from Duden, Britannica, Harrap, Merriam-Webster and Oxford. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Electronic dictionary」の詳細全文を読む スポンサード リンク
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