1. One who translates orally from one language into another.
2. One who gives or expounds an interpretation: "An actor is an interpreter of other men's words, often a soul which wishes to reveal itself to the world" (Alec Guinness).
3. Computers A program that executes other programs.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. 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.