v. pro·trud·ed, pro·trud·ing, pro·trudes
To extend or jut out; project. See Synonyms at bulge.
To push or thrust outward: muscles that allow the tongue to be protruded.
[Latin prōtrūdere : prō-, forward; see PRO-1 + trūdere, to thrust; see treud- in the Appendix of Indo-European roots.]
pro·trudent (-trdnt) adj.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2019 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.