1. The act or process of inserting.
2. Something inserted, as an ornamental strip of lace or embroidery inserted between pieces of fabric.
3. Anatomy The point or mode of attachment of a skeletal muscle to the bone or other body part that it moves.
4. Genetics The addition, as by mutation, of one or more nucleotides to a chromosome.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. 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.