CRITICALITY
criticality
(noun) a critical state; especially the point at which a nuclear reaction is self-sustaining
criticality, criticalness, cruciality
(noun) a state of critical urgency
Source: WordNet® 3.1
Etymology
Noun
criticality (countable and uncountable, plural criticalities)
The state of being critical.
(education) A disposition for purposeful thinking and acting guided by criteria that are considered to be contextually appropriate and that are expected to result in positive outcomes related to the purpose.
(physics) The point at which a nuclear chain reaction becomes self-sustaining.
Source: Wiktionary