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Pronunciation: in'ha-la'shun


  1. The act of drawing in the breath.
  2. Drawing in a medicated vapor with the breath.
  3. A solution of a drug or combination of drugs for administration as a nebulized mist intended to reach the respiratory tree.
  4. Drawing in or exposed to an agent (gas, vapor, or particulate) that is contained in inspired or inspirable air.

Synonym(s): inspiration

[L. in-halo, pp. -halatus, to breathe at or in]

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.