1. In this manner: Lay the pieces out thus. See Usage Note at thusly.
2. To a stated degree or extent; so.
3. Therefore; consequently: Thus it was necessary for me to resign.
4. For example: Few of the nation's largest cities are state capitals; thus neither New York nor Chicago is the seat of its state's government.
[Middle English, from Old English; see to- 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.