Disease or Syndrome
male hypogonadism
male hy·po·gon·ad·ism [ meyl hahy-puh-goh-na-diz-uhm, -gon-a- ]
Definitions related to testicular hypogonadism:
  • (eunuchoidism) Eunuch-like state in which the male individual has non-functional TESTES.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
  • (male hypogonadism) Decreased functionality of the male gonad, i.e., of the testis, with reduced spermatogenesis or testosterone synthesis.
    Human Phenotype Ontology (HPO)
    The Human Phenotype Ontology Project, 2025
  • (testicular failure) Failure of testicular hormone production and spermatogenesis.
    NICHD Pediatric Terminology
    U.S. National Cancer Institute, 2021
  • (testicular failure) The failure of testicular hormone production and spermatogenesis.
    NCI
    U.S. National Cancer Institute, 2021
  • Hypogonadism is defined as testosterone deficiency with associated symptoms or signs, deficiency of spermatozoa production, or both. It may result from a disorder of the testes (primary hypogonadism) or of the hypothalamic-pituitary axis (secondary hypogonadism). Both may be congenital or acquired as the result of aging, disease, drugs,...
    Merck Manuals
    Merck & Co., Inc., 2025
  • Male hypogonadism is a condition in which the body doesn't produce enough of the hormone that plays a key role in masculine growth and development during puberty (testosterone) or enough sperm or both.
    Mayo Clinic
    Mayo Foundation for Medical Education and Research, 2025
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