Definitions

1. noun

the act or process of breathing in

“The doctor warned her about the dangers of excessive inhalation of pollutants.”

2. noun

a taking in of air or other substance into the lungs

“Inhalation of oxygen is necessary for human survival.”

3. noun

the amount of air or other substance taken in by the lungs at one time

“The inhalation volume of the lungs is impressive for its size.”