This task can be performed using ClickExplain
Chrome extension which gives you instant explanations for any text.
Best product for this task

ClickExplain
productivity
ClickExplain is a free Chrome extension that makes the web more understandable. Highlight any text, click the tiny magnifying glass, and boom β you get an instant, AI-powered explanation right there on the page. No tab-switching. No Googling. No losing your flow.

What to expect from an ideal product
- Highlight confusing text directly on any webpage and get instant explanations without opening new tabs or losing your place
- Click the magnifying glass icon to receive AI-powered breakdowns of complex terms, concepts, or passages right where you're reading
- Stay focused on your original task since you don't need to switch between multiple browser tabs to look up definitions
- Get explanations that appear as overlays on the same page, keeping your reading flow uninterrupted
- Skip the hassle of copying text to search engines and scrolling through results since explanations pop up instantly where you need them