tr. & intr.v. ag·glom·er·at·ed, ag·glom·er·at·ing, ag·glom·er·ates
To form or collect into a rounded mass.
Gathered into a rounded mass.
1. A confused or jumbled mass; a heap.
2. A volcanic rock consisting of rounded and angular fragments fused together.
[Latin agglomerāre, agglomerāt-, to mass together : ad-, ad- + glomerāre, to form into a ball (from glomus, glomer-, ball).]
ag·glomer·a′tive (-ə-rā′tĭv, -ər-ə-tĭv) adj.
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.