Also Cloud Reader offers a handful of pre-installed dictionaries, but unfortunately there is no discernible way to install more dictionaries. In case you’re not familiar with it, Cloud Reader is a web-app that allows you to read Kindle books directly from your browser. While trying to get Kindle PC to accept custom dictionaries ultimately proved futile, I started looking into another way to accomplish this with Kindle Cloud Reader. Cloud Reader: Not Enough Dictionaries, No Copy & Paste when reading Kindle books on your PC or Mac.
What has been missing from this list so far is an option to get the same feature on desktop computers, i.e. Whether it’s on your Kindle ereader, on your iPhone or iPad Kindle app, or Kindle Android app (see links for detailed instructions), custom dictionaries can be easily integrated, so that all you need to do is tap on unknown words to get an immediate translation.
As a language instructor and author of language learning textbooks, I’ve always found the Kindle’s built-in dictionary a great tool to make reading foreign language texts more fluid and frictionless.