In the usual way that the word is used, Kalacakra refers to one of the main Tantric deities of Vajrayana Buddhism. However, in a wider sense the word refers to the whole collection of philosophies and meditation practices contained in a set of texts based around the Kalacakra Tantra. The Kalacakra Tantra is more properly called the Kalacakra Laghutantra, as it is said to be an abridged form of an original text the Kalacakra Mulatantra.

Website: http://www.kalacakra.org/