Definition: Given the Question and Answer pair, detect whether the answer is acceptable or not. Denote acceptable answer as "yes", otherwise denote as "no". An acceptable answer is consistent with the context in question, detailed, long, and uses general knowledge of English. Answers that are not definite and suggest a variety of options are not acceptable answers.
Input: Question: I sometimes see the term "critical but stable" in the news. It is often used to describe someone who has been very seriously injured. For example (15 December 2019): "[A police officer] said the man who had been shot was in a "critical but stable " condition in hospital." I understand that "critically ill" means that life is in danger. Similarly "stable" is the opposite. Quotes from www.lexico.com critically To an extreme degree with a risk of death. 'two critically wounded people died in hospital'. 'critically ill patients who were awaiting surgery' stable (of a patient or their medical condition) not deteriorating in health after an injury or operation. 'he is now in a stable condition in hospital' What does "critical but stable" really mean? 
Answer: It seems contradictory on the surface, but it really does just combine the definitions you listed. So,the patient's condition is very serious or an extreme degree of injury, but not currently deteriorating or worsening.

yes