This is a rarely used astrological sign
to denote the Part of the Spirit, . It
corresponds to ,
Fortuna or Part of Fortune (see the Word Index). It has
been suggested that the Arabs introduced this sign during the Middle
Ages. and were calculated
from the positions of ,
, and the ascendant. The Part of the Cross is another of these
Arabian parts in the birth chart (horoscope), associated with disease and death. The position
of the Part of the Cross was calculated from the positions of , , and the ascendant.
The Part of the Heart finally, was associated with love and relationships. Its position was calculated from the positions of , , and the ascendant.
According to Robert Hand (see the bibliography in the Appendices) the Arabian parts originate from ancient Greece despite being called Arabian parts.
Compare with above, similar in structure and partly also in meaning.