po·grom (p?-gr?m?, p??gr?m)n. An organized, often officially encouraged massacre or persecution of a minority group, especially one conducted against Jews.[Russian, outrage, havoc, from pogromit’, to wreak havoc : po-, perfective aspectual pref. (from po, next to; see apo- in Indo-European roots) + gromit’, to outrage, wreak havoc (from grom, thunder).]po·grom? v.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.pogrom (?p??r?m) n (Government, Politics & Diplomacy) an organized persecution or extermination of an ethnic group, esp of Jews[C20: via Yiddish from Russian: destruction, from po- like + grom thunder]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014po?grom (p??gr?m, -?gr?m, po?-) n. an organized massacre, esp. of Jews. [1880?85; (