Pharmacologic Substance
expectorant Audio
ex·pec·to·rant [ ik-spek-ter-uh nt ]
Subclass of:
Respiratory System Agents
Etymology:
Latin ex = out + pectus = chest
Definitions related to expectorants:
  • Any agent that promotes ejection of mucus or exudate from the lungs, bronchi and trachea by decreasing mucus viscosity or by increasing the secretion of mucus in a dry, unproductive cough.
    NCI Thesaurus
    U.S. National Cancer Institute, 2021
  • Agents that increase mucous excretion. Mucolytic agents, that is drugs that liquefy mucous secretions, are also included here.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2021
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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.