tr.v. en·vel·oped, en·vel·op·ing, en·vel·ops
1. To wrap, enclose, or cover: "Accompanying the darkness, a stillness envelops the city" (Curtis Wilkie).
2. To surround: The troops enveloped the town.
[Middle English envolupen, to be involved in, from Old French envoluper, envoloper : en-, in; see EN-1 + voloper, to wrap up; perhaps akin to Medieval Latin faluppa, chaff, straw (influenced by Latin volvere, to roll).]
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.