canonical UK /kəˈnɒn.ɪ.kəl/US /kəˈnɑ.nɪ.kəl/adjective 10noun 2forms 3 adjective10 •Present in a canon, religious or otherwise.The Gospel of Luke is a canonical New Testament book. •Related to or part of the canon of a fictional universe; officially part of a fictional work’s established continuity. •According to recognised or orthodox rules.The men played golf in the most canonical way, with no local rules. •In conformity with canon law. •Prototypical. •Stated or used in the most basic and straightforwardly applicable manner. •In canonical form. •Distinguished among entities of its kind, so that it can be picked out in a way that does not depend on any arbitrary choices. •Of or pertaining to an ecclesiastical chapter. •In the form of a canon. noun2 •[plural only] The formal robes of a priest.He, good man, could make but little of his solitary friend, and must many a time have been startled out of his canonicals by the strange, alien speeches which he heard. — 1857 •(Internet) A URL presented in canonical form.Google advises canonicals as one of the preferred methods of treating duplicate content in your CMS. — 2015 formscanonicals · more canonical · most canonical