The knee; an anatomical term used in medical and scientific contexts to refer to the knee joint or a knee-like angle in bone structures.
From Latin 'genu' meaning knee. This anatomical term entered English through medical and scientific nomenclature, preserving the original Latin form in technical vocabulary.
Medical professionals still use Latin terms like 'genu' because they wanted medical language to be universal and unchanging—so a doctor in France, Poland, or Japan could all understand 'genu valgum' (knock-knees) without translation.
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