Show a dictionary when long-pressing a word

I have a Kindle app. My favorite thing about it is that I can long-press any word and a dictionary pops up for me. I am wondering if there's an app that does that for my phone. So if I'm reading a research paper or something, I can use the same feature across all mediums of news and reading. I've looked around and found lots of apps for dictionaries, but I want an interactive one. Does anyone know if that exists?