• synonyms

Klinefelter's syndrome

noun Pathology.
  1. an abnormal condition in which at least one extra X chromosome is present in a male: characterized by reduced or absent sperm production, small testicles, and in some cases enlarged breasts.
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Origin of Klinefelter's syndrome

named after Harry Fitch Klinefelter (born 1912), U.S. physician, co-author of a description of the syndrome
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

klinefelter's syndrome in Medicine

Klinefelter's syndrome

  1. A chromosomal anomaly in males characterized by the presence of two X-chromosomes and one Y-chromosome, causing reduced testicular size, seminiferous tubule dysgenesis, and infertility.XXY syndrome
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.