Firefox add-on that allows you to search the selected text or phrase on the sites you want.
Version: 184.108.40.206Searches a customisable selection of reference or search sites for the selected text.
Operating System: Mac OS X
Select a word or sentence and right click. You will see a list of sites that you can search the term with. The list of sites is customisable - you add add your own for example. The results of a specific site can be opened in a new tab, window or in a sidebar. Specific sites can be hidden from the menu if 'n' words have been selected (you don't want to search for a sentence on dictionary.com do you?).
The LookUp extension will open the results in a sidebar or new tab or window.
Note: The LookUp addon is cross-platform and it works on Mac OS X, Windows and Linux.