Cher·no·byl (ch?r-n??b?l, -b?l) or Chor·no·byl’ (chôr-) A city of northern Ukraine near the border of Belarus. It was evacuated and remains uninhabited as a result of a major nuclear power plant accident nearby on April 26, 1986.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.Chernobyl (t????n??b?l; -?n?b?l) n (Placename) a town in N Ukraine; site of a nuclear power station accident in 1986Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014Cher?no?byl (t??r?no? b?l, t??r-) n. a city in N Ukraine 80 mi. NW of Kiev: nuclear-plant accident 1986. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.ChernobylSite of the worst nuclear reactor accident, in 1986 in the Ukraine (part of the then USSR).Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited