/ Thesaurus / E Synonyms of extrapolation Find synonyms for: Noun1. extrapolation, calculation, computation, figuring, reckoningusage: (mathematics) calculation of the value of a function outside the range of known values2. extrapolation, inference, illationusage: an inference about the future (or about some hypothetical situation) based on known facts and observationsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: illegible Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language