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Multidef is a utility app and service for looking up the definitions of multiple words at one time and displaying the cumulative results in a single, editable window which can be copied to the clipboard, saved to a file or printed.

The service works on any text selection in any application that supports services. Turn the service on and off in Services Preferences (accessible from any Services menu), appears in the "Text" section, and is called "Get Multi-Word Definitions."

Note that in some Cocoa apps, such as TextEdit, if you select a full line of text by triple-clicking, you can then deselect words by

What's New

Version 1.0.1:
  • Help menu activated.
  • Web window title set to query (for and Wikiperdia querying)
  • Web views now display feedback when loading pages.
  • Bug fix in the Web view: no longer reloads previous url preventing new query from displaying.
  • Web viewer print button now prints whole Web page displaying, not just the visible Web frame.


Mac OS X 10.6.6 or above

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Multidef User Discussion


Current Version (1.x)


Downloads 644
Version Downloads 338
License Demo
Date 15 May 2011
Platform OS X / Intel 32
Price $10.00
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