e·lec·troph·o·rus (ĭ-lĕk′trŏfər-əs, ē′lĕk-)
n. pl. e·lec·troph·o·ri (-ə-rī′, -ə-rē′)
An apparatus for generating static electricity, consisting of a hard rubber disk that is given a negative charge by friction and a metal plate that is given a net positive charge by induction when in contact with the disk.
[New Latin : ELECTRO- + Greek -phoros, -phorous.]
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.