Astrologically, a Composite Chart or Combined Chart is calculated by taking an average, midpoint or mean amount between two or more horoscopes to generate a single Chart. This single Chart is often referred to as the Composite Chart and takes two or more individuals in relationship and produces a single Composite horoscope to represent the soul or nature of the relationship. A well-known saying often ascribed to Aristotle suggests that ‘the whole is greater than the sum of its parts’. In essence this is the nature of the Composite or Combined Chart, in that the alchemical combination of two individuals can create a relationship greater than the two.
Another way of describing the combined energies expressed in the astrological Composite Chart is by using the word “synergy”. Synergy is the dynamic force that is a result of working together to achieve something greater. The New Oxford Dictionary defines “synergy” as ‘the interactions or co-operation of two or more organisations, substances or other agents to produce a combined effect greater than the sum of their separate effects’. This is the underlying premise of the Combined Chart: that the astrological combination of two horoscopes can generate cosmic alignments more powerful than the individuals separately. The interpretation of a Composite Chart is a means of engaging in this mystery.