interpolation
Upper-Intermediate (B2)
IPA: /ˌɪntəˈpəʊleɪʃən/
KK: /ˌɪntərpəˈleɪʃən/
noun
Definition
The method of estimating values between two known values based on their surrounding data points.
Example
The scientist used interpolation to predict the temperature at noon based on the morning and afternoon readings.
Conversation
Have you ever heard of interpolation in math class?
Yeah, it sounds familiar, but I'm not sure I fully understand it.
It's basically a way to estimate values between known data points.
Oh, that makes sense! I guess it’s useful for graphs and charts.
Synonyms & Antonyms
Synonyms
estimation
insertion
interpolation
Antonyms
extrapolation
omission
removal
Root Explanation
Interpolation is formed from "inter-" (meaning between) and "polare" (meaning to make smooth or to polish). The word describes the process of estimating values between two known values, effectively smoothing out the gaps between them.
Memory Tip
Think of values being 'smooothed out' ('polare') 'between' ('inter-') known points — that's what interpolation means.
Visually Confused Words
noninterpolation
iteration