Spelled with a "k" to note its difference from stage ‘rabbit out of the hat' magic, it is the art of causing a desired result through no apparent measurable cause.

Alternate spelling of magic, coined by Aleister Crowley to differentiate 'the true science of the Magi from all its counterfeits'. In the broadest sense, Magick is any act designed to cause intentional change. This term is often spelled with a terminal "k" to differentiate it from other practices, such as "stage magic".

As defined by Aleister Crowley "Magick is the Science and Art of causing Change to occur in conformity with Will." ( Magick Without Tears, pg. 27, p.4)

The art and science of focusing your will and emotions to effect change both in the world around you and the world within you. Magick is neither good nor evil, positive or negative. (You will see magick spelled with a "k" in order to show the difference between stage magic...and Witch's Magick.)

This word is spelled with a “k” to differentiate between the magic of stage illusions. The best definition of magick was invented by Aleister Crowley: “Magick is the science and art of causing change to occur in conformity to will.

Common Neo-Pagan and Wiccan spelling of "magic," coined by occultist Aleister Crowley to distinguish real magic from false stage magic.

Aleister Crowley's spelling of magic, a deliberate attempt to get to the archaic roots of the word and to distinguish it from the magic used in conjuring tricks. Some suggest that this spelling reflects the sexual element of his ideas – k is the first letter of the Greek word kteis, meaning female genitalia.

using force of will to make changes in the world around you, often with the aid of tools (such as herbs, oils, etc.).

The art and science of focusing your will and emotions to effect change both in the world around you and the world within you. Magick is neither good nor evil, positive nor negative. It is the use of the power that determines the path it will take.

A term first used by Aleister Crowley (a Satanist). It refers to any ritual or spell that is designed to bring about a change in a person or the environment. Magick allegedly works within natural laws and cannot violate them.

The supernatural power that transcends normal physical laws. See Magick, Magick Spells.

is different from magic. Magick refers to inborn power, similar to the concept of a ‘life force', while magic can refer to either sleight of hand (fake magic or street magic) or the use of magick to cast spells (fireballs, psychic shields, spontaneous rain showers, etc.)

Magick, in the broadest sense, is any act designed to cause intentional change.(Crowley, Magick, Book 4 p.127) The archaic spelling with the terminal "k" was repopularized in the first half of the 20th century by Aleister Crowley when he made it a core component of his mystical system of Thelema.

Magick, Liber ABA, Book 4 is widely considered to be the magnum opus of 20th century occultist Aleister Crowley, the founder of Thelema. It is a lengthy treatise on Magick, his system of Western occult practice, synthesized from many sources, including Eastern Yoga, Hermeticism, medieval grimoires, contemporary magical theories from writers like Eliphas Levi and Helena Blavatsky, and his own original contributions. It consists of four parts: Mysticism, Magick (Elementary Theory), Magick in Theory and Practice, and ΘΕΛΗΜΑ—the Law.