I'm using Adobe Acrobat for my daily PDF reading and there are a lot of words I need to translate. Now I have to double click > copy > open browser > past > search for meaning > go back to PDF reader. This is cumbersome. I was wondering if there are any PDF readers, most preferably open source and cross platform, which has a built in dictionary (or plugin) activated by double clicking on a word?

P.S.1. I suppose some of the open source softwares suggestion here should have this feature.

P.S.2. I have also asked this question here in reddit.