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A city of southwest Ontario, Canada, on Thunder Bay, an inlet on the northwest shore of Lake Superior. A major port and industrial center, it was created in 1970 by the amalgamation of the twin cities of Port Arthur and Fort William.
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.
(Placename) a port in central Canada, in Ontario on Lake Superior: formed in 1970 by the amalgamation of Fort William and Port Arthur; the head of the St Lawrence Seaway for Canada. Pop: 103 215 (2001)
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a port in W Ontario, in S Canada, on Lake Superior: created in 1970 by the merger of twin cities (Fort William and Port Arthur) and two adjoining townships. 113,746.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.