inhalation

noun

in·​ha·​la·​tion ˌin-hə-ˈlā-shən How to pronounce inhalation (audio)
ˌi-nə-ˈlā-
1
: the act or an instance of inhaling
2
: material (such as medication) to be taken in by inhaling

Examples of inhalation in a Sentence

Recent Examples on the Web
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Several other people were treated for tear gas inhalation, the ministry said. — Arkansas Online, 14 Oct. 2026 Black lung, that scourge of coal miners, had been identified in the mid-19th century but its cause, the inhalation of coal dust, did not come under federal oversight until 1969. — Business Columnist, Los Angeles Times, 13 Oct. 2026 The lungs process substances differently from the digestive system, and the health effects of chronic inhalation of propylene glycol through e-cigarette aerosol remain incompletely understood. — Emma Fenske, The Conversation, 13 Oct. 2026 Their injuries range from a concussion-type injury to inhalation and some minor burns. — Julie Sharp, CBS News, 7 Oct. 2026 See All Example Sentences for inhalation

Word History

First Known Use

circa 1623, in the meaning defined at sense 1

Time Traveler
The first known use of inhalation was circa 1623

Browse Nearby Words

Cite this Entry

“Inhalation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/inhalation. Accessed 17 Oct. 2026.

Kids Definition

inhalation

noun
: the act or instance of inhaling

Medical Definition

1
: the act or an instance of inhaling
specifically : the action of drawing air into the lungs by means of a complex of essentially reflex actions that involve changes in the diaphragm and in muscles of the abdomen and thorax which cause enlargement of the chest cavity and lungs resulting in production of relatively negative pressure within the lungs so that air flows in until the pressure is restored to equality with that of the atmosphere
2
: material (as medication) to be taken in by inhaling
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