dictionary

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 /ˈdɪkʃənrɪ/



WordReference Random House Learner's Dictionary of American English © 2016
dic•tion•ar•y /ˈdɪkʃəˌnɛri/USA pronunciation   n. [countable],pl. -ies. 
  1. a book containing the words of a language, usually in alphabetical order, with information about their meanings, pronunciations, special forms, etc.;
    such a book having the words of one language expressed in another language:a learner's dictionary of English; a Norwegian-English dictionary.
  2. a book giving information on particular subjects or on a particular class of names, facts, etc., usually arranged alphabetically:a biographical dictionary.
  3. Computinga list of words used by a word-processing program to check spellings in text.
See -dict-.
WordReference Random House Unabridged Dictionary of American English © 2016
dic•tion•ar•y  (dikshə ner′ē), 
n., pl. -ar•ies. 
  1. a book containing a selection of the words of a language, usually arranged alphabetically, giving information about their meanings, pronunciations, etymologies, inflected forms, etc., expressed in either the same or another language;
    lexicon;
    glossary:a dictionary of English; a Japanese-English dictionary.
  2. a book giving information on particular subjects or on a particular class of words, names, or facts, usually arranged alphabetically:a biographical dictionary; a dictionary of mathematics.
[Computers.]
    • a list of codes, terms, keys, etc., and their meanings, used by a computer program or system.
    • a list of words used by a word-processing program as the standard against which to check the spelling of text entered.
Etymology:
  • Late Latin dictiōn- word (see diction) + -ārium, -ārius -ary
  • Medieval Latin dictiōnārium, dictiōnārius
  • 1520–30


Collins Concise English Dictionary © HarperCollins Publishers::

dictionary /ˈdɪkʃənərɪ -ʃənrɪ/ n ( pl -aries)
  1. a reference resource, in printed or electronic form, that consists of an alphabetical list of words with their meanings and parts of speech, and often a guide to accepted pronunciation and syllabification, irregular inflections of words, derived words of different parts of speech, and etymologies
  2. a similar reference work giving equivalent words in two or more languages. Such dictionaries often consist of two or more parts, in each of which the alphabetical list is given in a different language
  3. a reference publication listing words or terms of a particular subject or activity, giving information about their meanings and other attributes: a dictionary of gardening
  4. a collection of information or examples with the entries alphabetically arranged: a dictionary of quotations
Etymology: 16th Century: from Medieval Latin dictiōnārium collection of words, from Late Latin dictiō word; see diction



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