1. Architecture Joined to or by a wall, especially by sharing a wall with another building; not freestanding: a block of attached houses.
2. Biology Fixed to a surface for one part of the life cycle, as a barnacle.
3. Feeling affection for someone; fond or involved: She is very attached to her cousins.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 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.