point of no return

Definition of Point Of No Return in English :

1. point of no return, rubicon

a line that when crossed permits of no return and typically results in irrevocable commitment

WordNet Lexical Database for English. Princeton University. 2010.

Point Of No Return

noun

1.

a point at which an irreversible commitment must be made to an action, progression, etc

2.

a point in a journey at which, if one continues, supplies will be insufficient for a return to the starting place

1.

the moment on a flight when there is no longer enough fuel to return to the starting point

2.

a point in an enterprise, adventure, etc. when participants are too deeply involved or committed to withdraw

n. pl. points of no return

1. The point in a course of action beyond which reversal is not possible.

2. The point in the flight of an aircraft beyond which there is insufficient fuel for return to the starting point.