1. Far from others or difficult to get to; remote: an isolated farmhouse.
2. Occasional or rare: Reporters in the field observed isolated instances of rebellion.
3. Characterized by little social contact: leading an isolated life.
[From French isolé, from Italian isolato, from Latin īnsulātus, made into an island, from īnsula, island.]
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.