EXTRAPOLATE

verb (-lated; -lating) see: extra- Date: 1874 transitive verb to infer (values of a variable in an unobserved interval) from values within an already observed interval, 2. to project, extend, or expand (known data or experience) into an area not known or experienced so as to arrive at a usually conjectural knowledge of the unknown area , to predict by projecting past experience or known data , intransitive verb to perform the act or process of extrapolating, extrapolation noun extrapolative adjective extrapolator noun