Use Quick Dictionary to get word definition inside any reading app (ebooks/News/Browsers etc.) without opening the dictionary app from outside. It saves lot of time while reading and makes search for definition very fast.

This dictionary works offline. It allows user to save their own definition and even edit the dictionary.

Quick Dictionary’s power comes from time saving two search methods which make definition search useful. App is designed to powerschool the students and it is very popular among teachers using powerschool.

The time saver- CNET

Read more search all definition - time

Must have for powerschool-ing!
Former Name: News Dictionary WordSnitch