Disease or Syndrome
azoospermia Audio
a·zo·o·sper·mi·a [ ay-zoh-oh-sper-mee-uh ]
Subclass of:
Male infertility
Definitions related to azoospermia:
  • A condition of having no sperm present in the ejaculate (SEMEN).
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
  • Absence of any measurable level of sperm,whereby spermatozoa cannot be observed even after centrifugation of the semen pellet.
    Human Phenotype Ontology (HPO)
    The Human Phenotype Ontology Project, 2025
  • Complete absence of spermatozoa in the semen.
    NCI
    U.S. National Cancer Institute, 2021
  • A disorder characterized by laboratory test results that indicate complete absence of spermatozoa in the semen.
    Common Terminology Criteria for Adverse Events
    U.S. National Institutes of Health, 2021
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