a book, optical disc, mobile device, or online lexical resource (such as Dictionary.com) containing a selection of the words of a language, giving information about their meanings, pronunciations, etymologies, inflected forms, derived forms, etc., expressed in either the same or another language; lexicon; glossary. Print dictionaries of various sizes, ranging from small pocket dictionaries to multivolume books, usually sort entries alphabetically, as do typical CD or DVD dictionary applications, allowing one to browse through the terms in sequence. All electronic dictionaries, whether online or installed on a device, can provide immediate, direct access to a search term, its meanings, and ancillary information: an unabridged dictionary of English; a Japanese-English dictionary.
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.
a specialized dictionary covering terms used in the various branches of the legal profession, as civil law, criminal law, and corporate law. A comprehensive legal dictionary adds to its body of standard English entries many words and phrases that have made their way into modern legal practice from law French and Latin and are rarely found in a general English monolingual dictionary. Such a specialized dictionary is useful not only for law students and for attorneys themselves, but for members of the lay public who require legal services. Legal dictionaries published in print follow the normal practice of sorting entry terms alphabetically, while electronic dictionaries, such as the online Dictionary of Law on Dictionary.com, allow direct, immediate access to a search term.
a specialized dictionary covering terms used in the health professions by doctors, nurses, and others involved in allied health care services. A dictionary with authoritative spellings and definitions is a particularly crucial resource in medicine, where a misspelling or misunderstanding can have unfortunate consequences for people under care. Print dictionaries in this field may be sorted alphabetically or may be categorized according to medical specializations or by the various systems in the body, as the immune system and the respiratory system. The online Medical Dictionary on Dictionary.com allows alphabetical browsing in the combined electronic versions of more than one authoritative medical reference, insuring access to correct spellings, as well as immediate, direct access to a known search term typed into the search box on the site: A medical dictionary reveals that large numbers of medical terms are formed from the same Latin and Greek parts combined and recombined.