to estimate (a value of a function or measurement) beyond the values already known, by the extension of a curve
Compareinterpolate 4 to infer (something not known) by using but not strictly deducing from the known facts
WordReference Random House Learner's Dictionary of American English © 2025
ex•trap•o•late /ɪkˈstræpəˌleɪt/USA pronunciation
v., -lat•ed, -lat•ing.
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WordReference Random House Unabridged Dictionary of American English © 2025- to figure out or infer (something unknown) from something known; conjecture: [~ + object]We should be able to extrapolate our future costs for that program.[no object]Can you extrapolate from these figures?
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ex•trap•o•late
(ik strap′ə lāt′),USA pronunciation v., -lat•ed, -lat•ing.
v.t.
v.i.
ex•trap′o•la′tion, n.
ex•trap′o•la′tive, ex•trap•o•la•to•ry
(ik strap′ə lə tôr′ē, -tōr′ē),USA pronunciation adj.
ex•trap′o•la′tor, n.
v.t.
- to infer (an unknown) from something that is known; conjecture.
- Statisticsto estimate (the value of a variable) outside the tabulated or observed range.
- Mathematicsto estimate (a function that is known over a range of values of its independent variable) to values outside the known range.
v.i.
- Mathematicsto perform extrapolation.
- extra- + (inter)polate 1825–35
Collins Concise English Dictionary © HarperCollins Publishers::
'extrapolate' also found in these entries (note: many are not synonyms or translations):