A person of great or varied learning.
[Greek polumathēs : polu-, poly- + manthanein, math-, to learn; see mendh- in the Appendix of Indo-European roots.]
poly·math′, pol′y·mathic adj.
po·lyma·thy (pə-lĭmə-thē) n.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 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.