Occurring or existing concurrently; attendant: poverty and its concomitant social problems. See Synonyms at contemporary.
One that occurs or exists concurrently with another.
[Late Latin concomitāns, concomitant-, present participle of concomitārī, to accompany : Latin com-, com- + Latin comitārī, to accompany (from comes, comit-, companion; see ei- in the Appendix of Indo-European roots).]
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.