[{"Bold_text": "verb (used with object)", "List Items": ["to infer (an unknown) from something that is known; conjecture.", "Statistics.to estimate (the value of a variable) outside the tabulated or observed range.", "Mathematics.to estimate (a function that is known over a range of values of its independent variable) to values outside the known range."]}, {"Bold_text": "verb (used without object)", "List Items": ["to perform extrapolation."]}]