extrapolation
noun/ɪkˌstræpəˈleɪʃn/
/ɪkˌstræpəˈleɪʃn/
[uncountable, countable] (formal)- extrapolation (of something) (from/to something) the act or process of estimating something or forming an opinion about something, using the facts that you have now and that are relevant to one situation and supposing that they will be relevant to the new one
- Their age can be determined by extrapolation from their growth rate.
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extrapolation