I wish to have a plug-in or a tool in Adobe acrobat DC Pro with the help of which i can get the meanings of words in a pdf file. Though double clicking on the word should be sufficient, but I don't mind even if i have to right click on the selected word. But the meaning should pop-open within the program itself. The current version of Acrobat DC Pro gives an option of "Look-up" of the selected phrase, but it pops up an internet browser window to to show the meaning from from dictionary.com. Is there a tool or an add-on that is existing that can show me the meanings of words without opening the internet browser; which i am unfamiliar about.
I'm not aware of any such tool. It's possible to set it up yourself if you create the dictionary and then run a script on your file(s) to apply the pop-up definition for each word in it. This will be a very complex process, though.