Definition of extrapolate verb from the Oxford Advanced American Dictionary

 

extrapolate

 verb
verb
NAmE//ɪkˈstræpəˌleɪt//
 
[intransitive, transitive](formal)Verb Forms present simple I / you / we / they extrapolate
 
he / she / it extrapolates
 
past simple extrapolated
 
-ing form extrapolating
 
 
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to estimate something or form an opinion about something, using the facts that you have now and that are valid for one situation and supposing that they will be valid for the new one extrapolate (from/to something) The figures were obtained by extrapolating from past trends. extrapolate something (from/to something) We have extrapolated these results from research done in other countries. The results cannot be extrapolated to other patient groups.
extrapolation
 
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NAmE//ɪkˌstræpəˈleɪʃn//
 
noun [uncountable, countable] Their age can be determined by extrapolation from their growth rate.
See the Oxford Advanced Learner's Dictionary entry: extrapolate