Injury or Poisoning
overdose Audio
o·ver·dose [ oh-ver-dohs ]
Subclass of:
Substance-Related Disorders; Prescription Drug Misuse
Definitions related to drug overdose:
  • (overdose) Accidental or deliberate dose of a medication or street drug that is in excess of what is normally used.
    CRISP Thesaurus
    National Institutes of Health, 2006
  • (overdose) Administration of a quantity of a medicinal product given per administration or cumulatively, which is above the maximum recommended dose according to the authorised product information.
    CDISC Terminology
    Clinical Data Interchange Standards Consortium (CDISC), 2021
  • (overdose) An amount of drug that is more than what should be taken at one time.
    NCI Dictionary of Cancer Terms
    U.S. National Cancer Institute, 2021
  • (overdose) Exposure to, or intake of, an excessive amount of a substance.
    NCI
    U.S. National Cancer Institute, 2021
  • Accidental or deliberate use of a medication or street drug in excess of normal dosage.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 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.