D defs.my
Entry 3 senses Webster, 1913

Adoption

/əd-äp'-shən/ · A·dop·tion · IPA /əˈdɑp.ʃən/
01 n. The act of adopting, or state of being adopted; voluntary acceptance of a child of other parents to be the same as one's own child.
  1. 1.
    The act of adopting, or state of being adopted; voluntary acceptance of a child of other parents to be the same as one's own child.
  2. 2.
    Admission to a more intimate relation; reception; as, the adoption of persons into hospitals or monasteries, or of one society into another.
  3. 3.
    The choosing and making that to be one's own which originally was not so; acceptance; as, the adoption of opinions.