What would something that shows you like the equivalent of something else in another language be defined as? Or a book that teaches you another language be called?

"The "Rosetta stone" show that apple is manzana in spanish."

  • 1
    The ancient language decoder tablet?
    – jxh
    Mar 6, 2017 at 18:32
  • Does it have to be a single word? Bilingual or foreign language dictionary (or @Cameron's lexicon with appropriate adjective) is the most common term for something used to look up "apple" in English and get "manzana" in Spanish (or vice versa). For something that teaches another language, you'd use [foreign] language textbook or maybe primer or grammar. And your own Rosetta Stone can be used for something that is used to decode something that was previously unknown (even—or especially—if that wasn't its original purpose).
    – 1006a
    Mar 6, 2017 at 19:35
  • Secret decoder ring, er, tablet.
    – Drew
    Mar 6, 2017 at 20:29
  • Typically you refer to the as language1 - language2 dictionaries E.g. My Spanish-English Dictionary says that apple is manzana in Spanish.
    – Jim
    Mar 6, 2017 at 21:00

3 Answers 3


It would be a translator

  • A person who translates from one language into another, especially as a profession
  • A computer program that translates from one programming language into another

The general process would be called translation

  • The process of translating words or text from one language into another.

A physical book might be known as a translation guide.


Lexicon is probably the best word for what you are looking for:

  1. the vocabulary of a particular language, field, social class, person, etc.
  • A lexicon is usually monolingual.
    – deadrat
    Mar 6, 2017 at 18:28
  • True, but the only other term I can think of would be a translation guide, which is not a single word, although it is the generally accepted term from what I can see online.
    – Cameron
    Mar 6, 2017 at 18:32

The Rosetta Stone is a language course. The course is not a lexicon, dictionary, or translator. It teaches students a new language online, at their own pace.

Rosetta Stone site ...


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