Bicorporeal

Said of double-bodied Signs: Gemini, Sagittarius and Pisces. As originally 
employed by Ptolemy, bicorporeal was the only term by which he characterized the signs that are now designated as Mutable, or Deductive. Thus it is apparent that he classified Virgo also as 
bicorporeal. v. Signs.

DeVore, Nicholas. Encyclopedia of Astrology. New York: Philosophical Library, 1947.