Dictionary Definition

dĭkshə-nĕrē
dictionaries
noun
dictionaries
A reference work consisting of alphabetically listed words in a language, with definitions, etymologies, pronunciations, and other information; lexicon.
Webster's New World
A reference work consisting of alphabetically listed words in a language with their equivalents in another language.
A Spanish-English dictionary.
Webster's New World
Any alphabetically arranged list of words or articles relating to a special subject.
A medical dictionary.
Webster's New World
A list of words stored in machine-readable form for reference, as by spelling-checking software.
American Heritage
verb
To look up in a dictionary.
Wiktionary
To add to a dictionary.
Wiktionary
(intransitive) To appear in a dictionary.
Wiktionary
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other
In cracking terms, a dictionary is a word list that plugs into cracking programs as a means of “breaking” passwords. These dictionaries contain real words and those that individuals tend to choose for passwords. Because it takes only a few minutes to go through hundreds of thousands of words in a dictionary to crack a password, computer users are warned not to select a word that may be commonly found in a dictionary. In theory, users tend to select passwords that they have used previously. A popular password is NCC1701, which was the registry number for Captain James T. Kirk’s starship, the Enterprise, on the original “Star Trek” television series. Children’s names and anniversary dates are also popular passwords. Graham, R. Hacking Lexicon. [Online, 2001.] Robert Graham Website. http://www.linuxsecurity.com/resource_files/documentation/hacking-dict.html.
Webster's New World Hacker

Other Word Forms of Dictionary

Noun

Singular:
dictionary
Plural:
dictionaries

Origin of Dictionary

  • Medieval Latin dictionarium, from Latin dictionarius, from dictio (“speaking”), from dictus, perfect past participle of dīcō (“speak”) + -arium (“room, place”).

    From Wiktionary

  • Medieval Latin dictiōnārium from Latin dictiō dictiōn- diction diction

    From American Heritage Dictionary of the English Language, 5th Edition

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