1. (grĕnĭch, grĭnĭj) A borough of Greater London in southeast England on the Thames River. It is the site of the original Royal Observatory, through which passes the Prime Meridian, or longitude 0°.
2. (grĕnĭch, grĭn-, grēnwĭch′) A town of southwest Connecticut on Long Island Sound. Settled in 1640, it is a wealthy suburb of New York City and home to many investment companies.
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.