Lexikon

See also: lexikon

German

Ultimately from Ancient Greek λεξικόν (lexikón, “dictionary”), from λεξικός (lexikós)

Lexikon n (genitive Lexikons, plural Lexika or Lexiken or Lexikons)

reference book; a book, usually alphabetically ordered, in which definitions and facts can be looked up, such as an encyclopaedia, dictionary, etc.
Synonyms: Nachschlagewerk, schlaues Buch (informal)

The use of this word for a dictionary specifically, as in ein französisch-deutsches Lexikon (“a French-German dictionary”), is considered dated by some authorities including Duden. However, the inclusion of dictionaries in the broader term Lexikon can hardly be considered dated.