̷ ̷ˌ ̷ ̷ ̷ ̷ˈlāshən noun
( -s )
Etymology: Latin interpolation-, interpolatio, from interpolatus + -ion-, -io -ion
1. : an act of interpolating or state of being interpolated : introduction or insertion of something spurious or foreign
2. : something that is introduced or inserted : insertion
3. : the process of calculating approximate values by interpolating between values already known