'Crisis' definitions:

Definition of 'crisis'

From: WordNet
noun
An unstable situation of extreme danger or difficulty; "they went bankrupt during the economic crisis"
noun
A crucial stage or turning point in the course of something; "after the crisis the patient either dies or gets better"

Definition of 'Crisis'

From: GCIDE
  • Crisis \Cri"sis\ (kr?"s?s), n.; pl. Crises (-s?z). [L. crisis, Gr. ????, fr. ???? to separate. See Certain.]
  • 1. The point of time when it is to be decided whether any affair or course of action must go on, or be modified or terminate; the decisive moment; the turning point. [1913 Webster]
  • This hour's the very crisis of your fate. --Dryden. [1913 Webster]
  • The very times of crisis for the fate of the country. --Brougham. [1913 Webster]
  • 2. (Med.) That change in a disease which indicates whether the result is to be recovery or death; sometimes, also, a striking change of symptoms attended by an outward manifestation, as by an eruption or sweat. [1913 Webster]
  • Till some safe crisis authorize their skill. --Dryden. [1913 Webster]

Synonyms of 'crisis'

From: Moby Thesaurus