0 the stage at which it is no longer possible to stop what you are doing and when its effects cannot now be avoided or prevented:
1 the stage in a process when it is too late to change what you are doing so that you must continue:
2 the stage at which it is no longer possible to stop what you are doing, and when its effects cannot now be avoided or prevented:
People must recognize that it is not easy to decide when this point of no return has arrived (2;4).
A point of no return could easily be left far behind before it was realized what had happened.
It proved that decay of the old regime had reached the point of no return, and that its days in power were numbered.
In search of the point of no return : the control of response processes.
Death is the point of no return.
Some even say that we have already gone past the point of no return.
The point of no return has been reached.
Are we also willing to subject our climate to the point of no return?