The depiction of at least one character who is the "new sibling" of an individual born of a different family united by marriage. [quote] Simplified version:
S and T were married & V and W were married.
S and T made U.
V and W made X.
Unfortunately, both families divorced.
S remarried someone else, S remarried V.
Since U is the biological child of S... That means that X is the stepsibling of U.[/quote]
Stepfamily