(~s)
1.
Inhalation is the process or act of breathing in, taking air and sometimes other substances into your lungs. (FORMAL)
...a complete cycle of ~ and exhalation...
They were taken to hospital suffering from smoke ~...
Take several deep ~s.
? exhalation
N-VAR
2.
An ~ is a treatment for colds and other illnesses in which you dissolve substances in hot water and breathe in the vapour.
Inhalations can soothe and control the cough...
N-COUNT