[pastelsky]

I was referring to the time between the browser paints your site and when JS execution kicks in.

See https://www.fastly.com/cimages/6pk8mg3yh2ee/3Toq5jWy0EuqG8KU...

[y4mi]

I can't find any other source for that definition besides that picture.

Where does it originate if I may ask?

[pastelsky]

The term isn't very ubiquitous, but the problem it describes is. Some references —

https://addyosmani.com/blog/rehydration/

https://developers.google.com/web/updates/2019/02/rendering-...