• The time when a page is minimally interactive, or when the window is quiet enough to handle user input. It is a non-standard Google web performance metric. Generally, it occurs when most, but not necessarily all visible user interface elements are interactive, and the user interface responds, on average, to most user input within 50 ms. ← MDN Web Docs

1. Related terms: Central processing unit · Time to Interactive · Input/Output · Standard Input
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