v. ex·trap·o·lat·ed, ex·trap·o·lat·ing, ex·trap·o·lates
1. To infer or estimate by extending or projecting known information.
2. Mathematics To estimate (a value of a variable outside a known range) from values within a known range by assuming that the estimated value follows logically from the known values.
To engage in the process of extrapolating.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.