ver·sus (vûrsəs, -səz)
1. Abbr. v. or vs. In conflict or competition with; against: the plaintiff versus the defendant; Michigan versus Ohio State.
2. As the alternative to or in contrast with: "freedom of information versus invasion of privacy" (Ian Hamilton).
[Middle English, from Medieval Latin, from Latin, turned, toward, from past participle of vertere, to turn; see wer-2 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.