Critical point
WordNet
noun
(1) 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"
WiktionaryText
Noun
- The temperature and pressure at which the vapour density of the gas and liquid phases of a fluid are equal, at which point there is no difference between gas and liquid.
- A maximum, minimum or point of inflection on a curve; a point at which the derivative of a function is zero or undefined.
- A juncture at which time a critical decision must be made.