Wicca is a contemporary Pagan religion, with spiritual roots in the earliest expressions of reverence of nature, as a manifestation of the divine. Wicca views Deity as Goddess and God; thus it is polytheistic.  It also embraces the practice of Magic and accepts reincarnation.  Religious festivals are held in observance of the Full Moon and other astronomical (and agricultural) phenomena.  It has no associations with Satanism. ¹

Wicca is both a religion and a Craft.  As a religion, like any other religion, its purpose is to put the individual and the group in harmony with the Divine creative principle of the Cosmos, and its manifestations, at all levels.  As a Craft, its purpose is to achieve practical ends by psychic means, for good, useful and healing purposes.  In both aspects, the distinguishing characteristics of Wicca are its Nature-based attitude, its small-group autonomy with no gulf between priesthood and “congregation”, and its philosophy of creative polarity at all levels, from Goddess and God to Priestess and Priest. ³

Wicca by Definition: 

The catchall term used by witches to describe various denominations of the Craft. Though the word itself is widely accepted, its origin is hotly contested. Likely sources include the Old English word for witch – wicca (meaning male witch) or wicce (meaning female witch).  ²

A participant of a modern revival of ancient Earth-centric religions focusing on the God and Goddess of Nature.

A participant of a modern revival of ancient Earth-centric religions focusing on the God and Goddess of Nature.

A narrow definition – the modern religion deriving from the pre-Christian spiritual traditions of the British Isles. ⁴

Wicca, wicce; the Anglo-Saxon root words, from which the modern words Wicca, witchcraft, witch, wit, wise and wisdom may derive. ⁵ 

Sources:
1. Living Wicca; A Further Guide for the Solitary Practitioner by Scott Cunningham
2. Witches Craft; A Multidenominational Wicca Bible by Bruce  K. Wilborn
3. A Witches’ Bible; The Complete Witches’ Handbook by Janet & Stewart Farrar
4. Embracing the Moon by Yasmine Galenorn
5. The Element Encyclopedia of Witchcraft by Judika Illes