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extramural
extraneous
extranet
extranuclear
extraordinaire
extraordinary
extraordinary general meeting
extraordinary item
extrapolate
extrapolative statistical model
extrasensory
extrasensory perception
extrasolar
extrasystole
extraterrestrial
extraterritorial
extraterritoriality
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extrapolate

ex·trap·o·late [ ik stráppə làyt ] (past and past participle ex·trap·o·lat·ed, present participle ex·trap·o·lat·ing, 3rd person present singular ex·trap·o·lates)


verb 
Definition:
 
1. transitive and intransitive verb infer: to use known facts as the starting point from which to draw inferences or conclusions about something unknown
We try to avoid extrapolating a flu epidemic from mere anecdotal evidence.

2. transitive verb estimate value: to estimate a value that falls outside a range of known values, e.g. by extending a curve on a graph

[Mid-19th century. <extra- + interpolate]

ex·trap·o·la·tion [ ik stràppə láysh'n ] noun
ex·trap·o·la·tive [ ik stráppə làytiv ] adjective
ex·trap·o·la·tor [ ik stráppə làytər ] noun
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