Google Dictionary (by Google)

The Google Dictionary Chrome extension allows users to easily view definitions while browsing the web. Users can double-click on a word to see a pop-up bubble with its definition or access the complete definition using the toolbar dictionary. The extension supports multiple languages and automatically translates foreign words into the user's preferred language. It also offers a history feature where users can save and practice words they have looked up. Additionally, users have the option to download their history as a CSV file or allow other Chrome extensions to access it.