Diplosomia is spelled /dɪpləʊˈsəʊmiə/, with a stress on the second syllable. The word is a rare medical term that refers to the presence of two bodies within a single embryo. The prefix 'diplo-' comes from the Greek word for double, while the suffix '-somia' means the condition of having a body. This complex spelling is typical of medical terminology, which often incorporates Greek or Latin roots. Although uncommon, the word accurately describes a unique and interesting medical condition.
A condition in which twins, seemingly independent in all their parts, are joined at one or more points; see cut under thoracopagus.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.