n. pl. nexus or nex·us·es
1. A means of connection; a link or tie: "this nexus between New York's ... real-estate investors and its ... politicians" (Wall Street Journal).
2. A connected series or group.
3. The core or center: "The real nexus of the money culture [was] Wall Street" (Bill Barol).
[Latin, from past participle of nectere, to bind; see ned- in the Appendix of Indo-European roots.]
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.