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Definition 2024
Ont.
Ont.
English
Proper noun
Ont.
- (law) Abbreviation of Ontario.
Usage notes
This is the customary abbreviation of this term as used in case citations. See, e.g., The Bluebook: A Uniform System of Citation, Nineteenth Edition (2010), "Geographical Terms: Australian states and Canadian provinces and territories", Table T10.2, p. 438.