Amazon's latest update for Kindle on Android will make it easier to get through hard text. The company introduced the new Word Wise feature to the app. What this does is it displays the definitions of hard words right above what you're reading so it'll be easier to look up meanings. The feature will be especially useful if you're learning English or have a child learning vocabulary. However, it isn't available for all books. According to Amazon, it's "available on many popular English language titles." 

This version 4.11.0 update also introduces the ability to make flash cards, improved manga navigation, and some bug fixes for the app. 

Source: SlashGear | Download: Google Play Store (Free)