For Klinefelter Syndrome we have terms and definitions in 2 topics. The topics are Genetics and Sex.

An endocrine condition caused by a an extra X-chromosome (47,XXY); characterized by the lack of normal sexual development and testosterone, leading to infertility and adjustment problems if not detected and treated early.
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A genetic condition in which a male has extra X chromosomes, thereby causing the development of female secondary sex characteristics. It is widely believed that Joan of Ark was a "Klinefelter male."
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