This plugin hasn’t been tested with the latest 3 major releases of WordPress. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.



Defithis adds the ability for your users to look up words from your content on Google (and other services).
When they highlight a word, a small bubble will appear over it which if clicked, pops up a window where it’s explained what the word means. If you read the online version of NYTimes, you know what are we talking about. Note that even though this plugin is similar to the NYTimes gadget, it’s not the same. The plugin is way smaller in size and does not rely on any Javascript framework. The plugin adds its admin the ability to choose between services which provides the definitions, in the first release we put 3 services: Google (recommended), and

If you’d like to learn more about DefiThis, visit us at the plugin’s homepage. It would be also cool if you’d drop a comment and share your thoughts with us.


Upload DefiThis to your blog, Activate it and you’re done. Optionally, you can change some settings on the Settings>>DefiThis page.

Contributors & Developers

“DefiThis” is open source software. The following people have contributed to this plugin.

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Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.