noun
Klinefelter syndrome
Medical term for the chromosomal condition (XXY). Used in clinical contexts.
クラインフェルター症候群は、男性の染色体異常の一つです。
Klinefelter syndrome is one of the chromosomal abnormalities in males.
Named after Harry Klinefelter, who first described the condition in 1942. The Japanese term directly borrows the eponym in katakana plus 症候群 (syndrome).