n.
Pronunciation: ˌ in-h ə - ' l ā -sh ə n, ˌ i-n ə - ' l ā -
Function: noun
Date: circa 1623
1 : the act or an instance of inhaling
2 : material (as medication) to be taken in by inhaling
– in · ha · la · tion · al \ -shn ə l, -sh ə -n ə l \ adjective