adoption
US /əˈdɑːp.ʃən/
UK /əˈdɑːp.ʃən/

1.
the action or fact of adopting or being adopted
:
•
The adoption of new technologies is crucial for progress.
•
The company announced the adoption of a new policy.
2.
the legal process by which a person takes another person's child into their own family and raises them as their own
:
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They are going through the process of child adoption.
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The new law simplifies the adoption procedures.