I have been an OS X user for a long time and really gotten used to a lot of features that Apple has to offer. At work I have to keep switching between Windows 7 and Ubuntu 15.04. One of the most missed features that I have not figured out how to duplicate is the context menu dictionary lookup. Right-click on a word and this option appears in the context menu:
And clicking on that leads to a pop-up window with the dictionary entry:
I mostly use it within the browser. The browser I use the most is Chrome and it offers right click "search Google for selected word", which opens up a search results in a new page.
My question is how can I implement a feature similar to OS X, that opens up a popup window with a word definition in Windows and Ubuntu? Doing it in the browser would cover most of my needs but even better, is it possible to do this with the operating systems so it is available independent of the browser?