The Canadian Oxford Dictionary is a dictionary of Canadian English. First published by Oxford University Press Canada in 1998, it became a well-known reference for Canadian English.
The second edition, published in 2004, contains about 300,000 entries, including about 2,200 true Canadianisms. It also provides information on Canadian pronunciation and on Canadian spelling, which has features of both British and American spelling: colour, centre, and travelling, but tire, aluminum and realize.
Until September 2008, Oxford maintained a permanent staff of lexicographers in Canada, led by editor Katherine Barber. With its Canadian dictionary division closed, Oxford has since been outsourcing work on Canadian dictionary products to freelance editors.
Two other major Canadian English dictionaries are the ITP Nelson Canadian Dictionary and the Gage Canadian Dictionary, which was instrumental in the development of a domestic lexicography of Canadian English published as A Dictionary of Canadianisms on Historical Principles, 1st edition.