1. (genetics) abnormal complement of sex hormones in a male who has two Y chromosomes

Type of: sex chromosome

Encyclopedia: XYY

• ex cathedra
• ex gratia
• ex libris
• ex nihilo
• ex officio
• ex parte
• ex post facto
• ex vivo
• ex-boyfriend
• ex-con
• ex-convict
• ex-directory
• ex-gambler
• ex-husband
• ex-mayor
• ex-president
• ex-serviceman
• ex-spouse
• ex-voto
• ex-wife
• exa-
• exabit
• exabyte
• exacerbate
• exacerbating