Learned borrowing from Medieval Latindictiōnārium, from Latindictiōnārius, from dictiō(“speaking”), from dictus, perfect past participle of dīcō(“speak”) + -ārium(“room, place”). By surface analysis, diction + -ary.
A reference work with a list of words from one or more languages, normally ordered alphabetically, explaining each word's meanings (senses), and sometimes also containing information on its etymology, pronunciation, usage, semantic relations, and translations, as well as other data.
Synonyms:wordbook; see also Thesaurus:dictionary
(preceded by the) A synchronic dictionary of a standardised language held to only contain words that are properly part of the language.
(by extension) Any work that has a list of material organized alphabetically; e.g., biographical dictionary, encyclopedic dictionary.
(computing) An associative array, a data structure where each value is referenced by a particular key, analogous to words and definitions in a dictionary (sense 1).
dictionary (third-person singular simple presentdictionaries, present participledictionarying, simple past and past participledictionaried)