A condition or scene of noisy confusion: "The whole lobby was a perfect pandemonium, and the din was terrific" (Jerome K. Jerome). See Synonyms at noise.
[From Pandæmonium, capital of Hell in Paradise Lost, an epic poem by John Milton : Greek pan-, pan- + Greek daimōn, lesser god, demon; see DEMON + New Latin -ium, neuter n. suffix; see -IUM.]
pan′de·moni·ac (-nē-ăk′) 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.