From the Developer
Free offline Spanish dictionary very easy to use
This free offline Spanish dictionary explains the meaning of 45165 Spanish words. Definitions are based on Spanish Wiktionary. This is a monolingual dictionary only in Spanish, i.e. words must be entered in spanish.
♦ Fast, as it works offline, internet is used only when a word is not found in the offline dictionary
♦ You can leaf through words using your finger!
♦ Installation on SD card is supported.
♦ Bookmarks and history
♦ Integrated with Google Quick Search Box
✔ This application provides Dictionary API for 3rd party developers, please read further details: http://thesaurus.altervista.org/dictionary-android
You can listen to the word pronunciation, provided that voice data have been installed in your phone (Text-to-speech engine).
An offline dictionary needs memory. In case your device has low memory, please consider to use the online dictionary: https://play.google.com/store/apps/details?id=livio.dictionary