Sign or Symptom
nausea Audio
nau·se·a [ naw-zee-uh, -zhuh, -see-uh, -shuh ]
Subclass of:
Signs and Symptoms, Digestive
Etymology:
Greek naus = ship + ia = condition
Hence, nausea referred to ship sickness.
Definitions related to nausea:
  • A feeling of sickness or discomfort in the stomach that may come with an urge to vomit. Nausea is a side effect of some types of cancer therapy.
    NCI Dictionary of Cancer Terms
    U.S. National Cancer Institute, 2021
  • A sensation of unease in the stomach together with an urge to vomit.
    Human Phenotype Ontology (HPO)
    The Human Phenotype Ontology Project, 2025
  • An unpleasant sensation in the stomach usually accompanied by the urge to vomit. Common causes are early pregnancy, sea and motion sickness, emotional stress, intense pain, food poisoning, and various enteroviruses.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
  • The sensation that one is about to vomit.
    ACC/AHA Clinical Data Terminology
    American College of Cardiology and American Heart Association , 2020
  • Unpleasant sensation in the stomach usually accompanied by the urge to vomit.
    CRISP Thesaurus
    National Institutes of Health, 2006
  • Upper abdominal discomfort associated with an urge to vomit.
    NCI
    U.S. National Cancer Institute, 2021
  • A disorder characterized by a queasy sensation and/or the urge to vomit.
    Common Terminology Criteria for Adverse Events
    U.S. National Institutes of Health, 2021
  • Nausea, (from Greek nausia, "seasickness"), feeling of discomfort in the pit of the stomach that is associated with a revulsion for food and an expectation that vomiting will follow, as it often does. Nausea results from the irritation of nerve endings in the stomach or duodenum, which in turn...
    Encyclopedia Britannica
    Encyclopedia Britannica, Inc., 2025
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This content should not be used in place of medically-reviewed decision support reference material or professional medical advice. Some terms may have alternate or updated definitions not reflected in this set. The definitions on this page should not be considered complete or up to date.