ex·trap·o·late 
/ɪkˈstræpəˌleɪt/ verb
ex·trap·o·lates; ex·trap·o·lat·ed; ex·trap·o·lat·ing /ɪkˈstræpəˌleɪt/ verb formal : to form an opinion or to make an estimate about something from known facts [+ obj] ▪ We can extrapolate the number of new students entering next year by looking at how many entered in previous years. — often + from ▪ They extrapolated these results from their research. [no obj] ▪ With such a small study it is impossible to extrapolate accurately. — often + from ▪ She extrapolated from last year's data to arrive at her estimate.
— ex·trap·o·la·tion /ɪkˌstræpəˈleɪʃən/ noun, plural ex·trap·o·la·tions [count, noncount]
/ɪkˌstræpəˈleɪʃən/ noun, plural ex·trap·o·la·tions [count, noncount]
