Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun The point in a course of action beyond which reversal is not possible.
- noun The point in the flight of an aircraft beyond which there is insufficient fuel for return to the starting point.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun aviation The point in an
aircraft 'sflight when there isinsufficient fuel toreverse direction and return to theplace oforigin . - noun idiomatic The point in any
journey ,process , orsequence ofevents when it is no longer possible to reverse course orstop the process.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a line that when crossed permits of no return and typically results in irrevocable commitment
Etymologies
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Examples
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ramsler commented on the word point of no return
Related to the phrase, 'tipping point'. The distinction being that a 'point of no return' does not have any capability of being returned back to its starting state or position and is sometimes approached linearly without necessarily having a sudden acceleration past a certain point whereas a 'tipping point' implies the existence of multiple stable positions between which a system or object alternate and a non-linear change in the system or object at the tipping point.
June 19, 2009