a. The act or an instance of estimating: Estimation of the storm damage took weeks.
b. The amount, extent, position, size, or value reached in an estimate: the cost estimation is $500.
2. An opinion or judgment: In my estimation, that is a good book.
3. Favorable regard; esteem: held her teacher in high estimation.
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.