(genetics) abnormal complement of sex hormones in a male resulting in Klinefelter's syndrome(noun)
WordNet. Princeton University. 2010.
Use "xxy" in a sentence
"Most people are 46,xy (male) or 46,xx (female) : but some are 47,xxy (Klinefelter male), some 45,xo (Turner Female), and then there's mosaics and chimerae."
"Mere 47,xxy wouldn't explain the stuff going on in my endochrine system, especially with the bizarre Cholesterol levels."
"Perhaps this explains why Kleinfelter males, those with 47,xxy chromosomes rather than the usual 46,xy, between 1 in 500 and 1 in 1000 of the general population are over-represented in the IT industry."