Word Origin & History
pandemonium1667, Pandæmonium, in "Paradise Lost" the name of the palace built in the middle of Hell, "the high capital of Satan and all his peers," coined by John Milton (1608-74) from Gk. pan- "all" + L.L. dæmonium "evil spirit," from Gk. daimonion "inferior divine power," from daimon "lesser god"
(see
demon). Transferred sense "place of uproar" is from 1779; that of "wild, lawless confusion" is from 1865.