en·vi·ron·men·tal  ( ĕn-v ī′r ən-m ĕn tl, -v ī′ərn-)
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adj.1. Relating to or associated with the environment. 2. Relating to or concerned with the impact of human activities on the natural environment: the environmental movement. 3. Relating to potentially harmful factors originating in the environment: environmental illness.
en·vi′ron·mental·ly adv. |
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:
Indo-European Roots
Semitic Roots
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.
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