ex·trap·o·late

[ik-strap-uh-leyt] verb, ex·trap·o·lat·ed, ex·trap·o·lat·ing.
verb (used with object)
1.
to infer (an unknown) from something that is known; conjecture.
2.
Statistics. to estimate (the value of a variable) outside the tabulated or observed range.
3.
Mathematics. to estimate (a function that is known over a range of values of its independent variable) to values outside the known range.
verb (used without object)
4.
to perform extrapolation.

Origin:
1825–35; extra- + (inter)polate

ex·trap·o·la·tion, noun
ex·trap·o·la·tive, ex·trap·o·la·to·ry [ik-strap-uh-luh-tawr-ee, -tohr-ee] , adjective
ex·trap·o·la·tor, noun
o·ver·ex·trap·o·la·tion, noun

deduction, extrapolation, induction, generalization, hypothesis.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Extrapolate is one of our favorite verbs.
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to flee; abscond:
Collins
World English Dictionary
extrapolate (ɪkˈstræpəˌleɪt) [Click for IPA pronunciation guide]
 
vb
1.  maths Compare interpolate to estimate (a value of a function or measurement) beyond the values already known, by the extension of a curve
2.  to infer (something not known) by using but not strictly deducing from the known facts
 
[C19: extra- + -polate, as in interpolate]
 
extrapo'lation
 
n
 
ex'trapolative
 
adj
 
ex'trapolatory
 
adj
 
ex'trapolator
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

extrapolate
1874, a back formation from extrapolation. Said in earliest reference to be "an expression of Sir George Airy" (18011892), English mathematician and astronomer. Related: Extrapolated; extrapolating.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
extrapolate   (ĭk-strāp'ə-lāt')  Pronunciation Key 
To estimate the value of a quantity that falls outside the range in which its values are known.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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FOLDOC
Computing Dictionary

extrapolate definition


extrapolation

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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Example sentences
And if they can learn that you can extrapolate they have that level of
  understanding.
But to extrapolate from that the idea that the process itself is fascist is
  somewhat silly.
Students are to extrapolate current possibilities of biotechnology to what they
  may be used for in the future.
Still, many economists warn that it's difficult to extrapolate from these
  blades of grass.
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