I learned something new about my Mac tonight.   While I was reading an article online, I wanted a quick way to look up the meaning of “fiat.”   I knew that in Safari, if you highlight a word and right-click, an option in the resulting menu allows you to look that work up in the native dictionary app:

dictionary and safari

Also, with a highlighted word in Safari, you can choose Safari > Services> Look Up in Dictionary:

dictionary and safari

But I’m using Firefox, and in Firefox, neither of these options are available.   I learned by experimenting, though, that I could highlight a word and then drag it to the dictionary app icon in my dock.   The dictionary opens up and reveals the definition of my word.   I love finding little usability gems.   Put this one on the list.

dictionary app