syndrome X

noun
\ -ˈeks How to pronounce syndrome X (audio) \

Medical Definition of syndrome X

1 : angina pectoris of a usually benign form in which the coronary arteriogram is normal
2 : metabolic syndrome Metabolic syndrome, sometimes called syndrome X, was first defined in 1988 as a collection of health risks that may increase the chances of developing cardiovascular disease two-and-a-half to four times, and diabetes by four to six times.— Catherine Arnst, Business Week, 10 Oct. 2005

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