Jargon and use of acronyms bugs me too. My ways to discover what those terms mean is to use the google browser, drag mouse over the term to select it, Right click and choose "search google for ....." or select it the same way, Right click, choose copy, have
https://www.investopedia.com/dictionary/ in Bookmarks, go to it and Right click in their Search thing and Paste. Any better suggestions/refinements very welcome.