Online Reference For Body, Mind & Spirit

Term: Stellium

When three or more planets are in conjunction with one another, a stellium is formed. This adds intensity to the sign and house in which they occur. A stellium creates a sense of self-absorption and can add a self-centeredness to the personality, but it also provides a sense of focus. The difficulty arises when the individual needs to change focus or make adjustments.
SOURCE:  The Truth About Astrology, Gloria Star