What is Canonical?

* Canon Law: In canon law, a canon designates some law promulgated by a synod, an ecumenical council, or an individual bishop. The word "canon" comes from the Greek word "kanon," meaning "rule" or "standard."
* Canonical URL: A canonical URL is a URL that Google considers to be the preferred version of a page when it has duplicate content. It helps search engines understand which version of a page is the original and should be indexed.
* Grand Canonical Ensemble: In thermodynamics, the grand canonical ensemble describes the behavior of a system with given temperature, density, and volume. The canonical ensemble describes the behavior of a system with given temperature, volume, and average density.
* Canon Cameras: Canon U.S.A., Inc. is a retailer that sells cameras and other photography equipment.

Canonical in Different Contexts

* In canon law, canons are rules or standards promulgated by synods, ecumenical councils, or individual bishops.
* In thermodynamics, the grand canonical ensemble describes a system with given temperature, density, and volume, while the canonical ensemble describes a system with given temperature, volume, and average density.
* In photography, Canon is a well-known brand that produces cameras and other equipment.

Last Updated

The most recent information available on these topics can be found in the search results provided. The last updated dates for each source are:

* Canon Law: March 8, 2026
* Canonical URL: February 20, 2026 (twice)
* Grand Canonical Ensemble: March 4, 2026
* Canon Cameras: Multiple dates, with the most recent being March 7, 2026