a fetus in which a parasitic twin is enclosed within the body of the other twin (the autosite).
Unequal conjoined twins in which the parasitic member is included in the body of the host.
[end- + G. adelphos, brother]
endadelphos(ĕnd″ă-dĕl′fŏs) [Gr. endon, within, + adelphos, brother]
A congenitally deformed fetus whose twin is enclosed in the body or in a cyst on the fetus.