Lying or occurring between two extremes or in a middle position or state: an aircraft having an intermediate range; an intermediate school.
1. One that is in a middle position or state.
2. An intermediary.
3. Chemistry A substance formed as a necessary stage in the manufacture of a desired end product.
4. An automobile that is smaller than a full-sized model but larger than a compact.
intr.v. (-āt′) in·ter·me·di·at·ed, in·ter·me·di·at·ing, in·ter·me·di·ates
1. To act as an intermediary; mediate.
2. To intervene.
[Middle English, from Medieval Latin intermediātus, from Late Latin intermedius : Latin inter-, inter- + Latin medius, middle; see medhyo- in the Appendix of Indo-European roots.]
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.