Need to cast a spell? There are several useful words to know that have long magical histories. The roots of the word “magic” itself can be found in Magi or mage, a hereditary class of Zoroastrian priests of the ancient Medes or Persians. Magi was later used to describe men with special abilities such as king, priest or astrologer who could read omens in the skies. The word “magic” goes back to the 1300s, and it originally referred to rituals, incantations, or actions thought to give the user control over the natural world, but the definition has changed through the centuries. By the 1700s, it also referred to an actual supernatural power. In the 1800s, sleight of hand and card tricks became popular and stage performers used the word to imply they had special arcane abilities.
No one is sure of the origin of the strange word abracadabra, although believed to be Hebrew or Aramaic origin. It is possibly derived either from the Hebrew words ab (father), ben (son), and ruach hakodesh (holy spirit), or from the Aramaic avra kadavra, “it will be created in my words”. In the Harry Potter series, Rowling played with the Aramaic version to create a death spell, Avada Kedavra, which was supposed to mean “let this thing be destroyed.”
The earliest use of abracadabra is in a Latin poem in a medical book. The word was a written charm to protect against bad luck, illness, or evil. It was often worn as an amulet and resembled a “v” with the final letter dropped on each line until only “a” remained.
Hocus pocus first appeared in the early 1600s as Hocas Pocas, the common name for a magician or juggler. In 1634, a book appeared entitled Hocus Pocus Junior - The Anatomy of Legerdemain. The author was anonymous but was later dubbed Hocus Pocus after the book's title. It’s also possible hocus pocus evolved from nonsense words that sounded exotic and magical.
Another explanation for the origin of the term came from John Tillotson, Archbishop of Canterbury in 1694. In his Sermons he accuses it of being a parody of the consecration of the Catholic Mass and wrote, “In all probability those common juggling words of hocus pocus are nothing else but a corruption of hoc est corpus, by way of ridiculous imitation of the priests of the Church of Rome in their trick of Transubstantiation.” That Archbishop Tillotson was miffed at both stage performers and Catholics isn’t surprising, and there’s little evidence of his claims.
On a side note, hocus is also believed to be the source for the word hoax, but the word doesn't appear until 1796 and, like Archbishop Tillotson’s claim, there’s no direct evidence for a link.
Alakazam is an invocation of magical power to indicate an instantaneous transformation or appearance that occurs as if by magic. This word has the most mysterious origin. Because alakazam can be a proper name, some suggest it was used to invoke the powers of a particular person. Others trace the origin to a Hindu word meaning “flawless” or the Arabic al qasam, meaning oath. However, the first known appearance was in 1902 and appears likely that it was merely invented by stage magicians to evoke a sense of the mystical power of the Orient.