词典;字典;辞书 a book that gives a list of the words of a language in alphabetical order and explains what they mean, or gives a word for them in a foreign language
a Spanish-English dictionary 西班牙语—英语词典
专业术语大全;专业词典 a book that explains the words that are used in a particular subject
a dictionary of mathematics 数学词典
电子词典 a list of words in electronic form, for example stored in a computer's spellchecker
N-COUNT 词典;字典;辞书 A dictionary is a book in which the words and phrases of a language are listed alphabetically, together with their meanings or their translations in another language.
...a Welsh-English dictionary. 一本威尔士语-英语词典
N-COUNT 专业词典;术语大全 A dictionary is an alphabetically ordered reference book on one particular subject or limited group of subjects.
...the Dictionary of National Biography. 《英国传记大词典》