A political union, especially the one unifying Nazi Germany and Austria in 1938.
[German, annexation, from anschliessen, to enclose, annex : an, on (from Middle High German ane, from Old High German ana; see an- in the Appendix of Indo-European roots) + schliessen, to close (from Middle High German sliezen, from Old High German sliozan).]
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.