Circle. There are several “Circles” with mystic adjectives attached to them. Thus we have: (1) the “Decussated or Perfect Circle” of Plato, who shows it decussated in the form of the letter X ; (2) the“Circle-dance” of the Amazons, around a Priapic image, the same as the dance of the Gopis around the Sun (Krishna), the shepherdesses representing the signs of the Zodiac ; (3) the “Circle of Necessity” of 3,000 years of the Egyptians and of the Occultists, the duration of the cycle between rebirths or reincarnations being from 1,000 to 3,000 years on the average. This will be treated under the term “Rebirth” or “Reincarnation”.
Source: H.P.Blavatsky - The Theosophical Glossary