1. A constituent element, as of a system. See Synonyms at element.
2. A part of a mechanical or electrical complex.
3. Mathematics One of a set of two or more vectors having a sum equal to a given vector.
Being or functioning as a constituent or an ingredient.
[From Latin compōnēns, compōnent-, present participle of compōnere, to put together : com-, com- + pōnere, to put; see apo- in the Appendix of Indo-European roots.]
com′po·nential (kŏm′pə-nĕnshəl) adj.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2019 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.