extrapolate (v.)youdaoicibaDictYouDict[extrapolate 词源字典]
1862 (in a Harvard observatory account of the comet of 1858), from extra- + ending from interpolate. Said in early references to be a characteristic word of Sir George Airy (1801-1892), English mathematician and astronomer. Related: Extrapolated; extrapolating.[extrapolate etymology, extrapolate origin, 英语词源]