Merriam-Webster's Dictionary and Thesaurus

Combines the meanings, pronunciations, and grammar advice of a dictionary with the synonyms and antonyms of a thesaurus.   Includes nearly 60,000 alphabetical dictionary entries and more than 13,000 thesaurus entries.  Abundant example phrases offer clear and concise word guidance.  Based on the best-selling *Merriam-Webster’s Collegiate® Dictionary.*

You can set this dictionary as your default Kindle dictionary and look up words while reading. The default setting is The New Oxford American Dictionary included on your Kindle, but you have the option to change your default setting to this compatible dictionary after purchase. Compatible with Kindle Voyage, Kindle Paperwhite, Kindle, Kindle Fire with Fire OS 4+, Kindle Keyboard, Kindle Touch, Kindle DX, Kindle for Android (version 4.0+), and Kindle for iPad/iPhone (version 4.0+). Default dictionary feature is not supported on Kindle for Mac, Kindle for PC, or Kindle Fire 1st/2nd generation.