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How can I get the dictionary look up feature in Mac OS X 10.7 Lion to work in Firefox?

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In Safari you can use a three finger double tap on the trackpad to bring look up a word in the dictionary. The feature is supposed to work in all programs, not just ones made by Apple.

In Safari you can use a three finger double tap on the trackpad to bring look up a word in the dictionary. The feature is supposed to work in all programs, not just ones made by Apple.

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I've created a bug report for this. More information will most likely appear there.

https://bugzilla.mozilla.org/show_bug.cgi?id=687026