A Dictionary of Canadianisms on Historical Principles

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A Dictionary of Canadianisms on Historical Principles (DCHP) is a historical usage dictionary of words, expressions, or meanings which are native to Canada or which are distinctively characteristic of Canadian English though not necessarily exclusive to Canada. The first edition was published by W. J. Gage Limited in 1967. The text of this first edition was scanned and released as a free-access online dictionary in 2013.

A second edition of A Dictionary of Canadianisms on Historical Principles (DCHP-2), was then created by expanding and partially revising the first edition's data set. DCHP-2 was published in 2017 as an academic project by the University of British Columbia, and is only available as a free-access online dictionary.