A visitor means a person who is lawfully in Canada, or seeks to come into Canada for a temporary purpose (such as work, study or visit) and who is not a Canadian citizen, permanent resident or the holder of a minister’s permit. … This includes those who are transiting through Canada.
A temporary resident visa (TRV) is an official counterfoil document issued by a visa office that is placed in a person’s passport to show that they have met the requirements for admission to Canada as a temporary resident.
Holding a TRV does not guarantee entry to Canada. The admission of foreign nationals into Canada as temporary residents is a privilege, not a right.