WordLookup

Permissions info: It requires Internet to fetch definitions via the Wordnik API. There's no ads whatsoever.

WordLookup allows you to view word definitions easily as you browse the web, and when using apps. It's like the popular Google Chrome extension Google Dictionary, but for Android! If you have found this useful, please do rate, share & comment!

Simply hold&select the word you wish to look up, share it with WordLookup and a small notification popup will show a few definitions for the word! It's that simple! No need to open another dictionary app! The little popup does not block you from browsing the web, as it is unobstructive and fades away after a short while.

As featured on CNET:

http://howto.cnet.com/8301-11310_39-57618586-285/add-a-pop-up-dictionary-to-android/

WordLookup is also open source:

https://github.com/icechen1/WordLookup

Here's how to use it:

1- Hold and select the word you'd like to get the definitions.

2- Select the Share button in the menu/Action Bar.

3- Share text to WordLookup.

4- The definitions should show up in a bit as a popup(Toast) notification.

Supported Apps:

-ICS Android Browser

-Google Chrome

-ICS Gmail and Email app

-Google Reader

-Pulse

-Many,many others. More will be added in this list.

Right now, this app is only tested on Android 4.0 - Ice Cream Sandwich, as many apps on earlier versions of Android do not support sharing text, your mileage may vary, though. It uses the Wordnik API to get definitions, so a Data/WIFI network connection is required.

The options allows you to customize the notifications, such as the number of definitions shown and display time. Features like using other dictionary sources (offline dictionaries) are coming soon!