'critical point' definitions:

Definition of 'critical point'

From: WordNet
noun
A crisis situation or point in time when a critical decision must be made; "at that juncture he had no idea what to do"; "he must be made to realize that the company stands at a critical point" [syn: juncture, critical point, crossroads]

Definition of 'critical point'

From: GCIDE
  • critical point \crit"ic*al point\ (Physics), That combination of volume and pressure, at the critical temperature of the substance, at which the liquid and gaseous phases of a given quantity of a substance have identical values for their densities and other properties. [PJC]

Synonyms of 'critical point'

From: Moby Thesaurus