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Medical Dictionary

critical

play
adjective crit·i·cal \ˈkrit-i-kəl\

Medical Definition of critical

  1. 1a:  relating to, indicating, or being the stage of a disease at which an abrupt change for better or worse may be anticipated with reasonable certainty <the critical phase of a fever>b:  being or relating to an illness or condition involving danger of death <critical care> <a critical head injury>

  2. 2a:  of sufficient size to sustain a chain reaction—used of a mass of fissionable materialb:  sustaining a chain reaction—used of a nuclear reactor

critically \-k(ə-)lē\play adverb




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