Adoption

The act of adopting.

The state of being adopted; the acceptance of a child of other parents as if he or she were one's own child.

"A Chinese baby girl was given away for adoption."

Admission to an institution, for example a hospital, clinic, mental asylum.

"the adoption of people into hospitals or monasteries"

The choosing and making that to be one's own which originally was not so; acceptance

"the adoption of opinions"