/ɪk'stræpəleɪt; ɪk`stræpə,let/
v [Tn, Tn.pr] ~ sth (from sth) (fml 文)
1 (mathematics 数) calculate (an unknown quantity) approximately from known values or measurements （从已知的值或量）推算出（未知的量）; 外推.
2 estimate (sth unknown) from facts that are already known 由已知事实估计（未知事物）; 推断; 推知
*One can extrapolate the size of the building from the measurements of an average room.从一间屋子的量度可以推断出整座建筑物的大小.

v [I and T]
[Date: 1800-1900; Language: Latin;Origin: extra ( EXTRA-) + English -polate (as in interpolate)]
to use facts about the present or about one thing or group to make a guess about the future or about other things or groups
extrapolate (sth) from sth
　It is possible to extrapolate future developments from current trends.
　You're extrapolating from your own feelings to mine.
extrapolate (sth) to sth
　These results cannot, however, be extrapolated to other patient groups.
>extrapolation [ɪk,stræpə'leɪʃən/