tipping point

noun4

1. •
   An irreversible change in the climate system.

   • Some researchers worry that rainforests will soon reach a tipping point — a point of no return in which the once-lush forests transition to arid regions. — 2021
2. •
   (figurative) The point at which a slow, reversible change becomes irreversible, often with dramatic consequences.
3. •
   A point in time when a group rapidly and dramatically changes its behavior by widely adopting a previously rare practice.
4. •
   The point in time at which some new technology becomes mainstream.