From online dictionary
inhalation
ɪnhəˈleɪʃ(ə)n/
noun
noun: inhalation; plural noun: inhalations
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the action of inhaling or breathing in.“the inhalation of airborne particles”
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MEDICINEthe inhaling of medicines or anaesthetics in the form of a gas or vapour.
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MEDICINEa preparation to be inhaled in the form of a vapour or spray.
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Origin
early 17th century: from medieval Latin inhalatio(n- ), from inhalare ‘inhale’.
