Thunder Bay

geographical name

Definition of Thunder Bay

  1. city in southwestern Ontario, Canada, on Lake Superior population 108,359 The city of Thunder Bay was formed in 1970 by consolidating the city of Fort William, which was originally a French fur-trading post in the 17th century, and the city of Port Arthur, which was a silver-mining town in the middle of the 19th century.


THUNDER BAY Defined for English Language Learners

Thunder Bay

geographical name

Definition of Thunder Bay for English Language Learners

  • : city in Ontario, Canada


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