mid-14c., from Old French adopcion or directly from Latin adoptionem (nominative adoptio), noun of action from past participle stem of adoptare "chose for oneself, take by choice, select, adopt," especially "to take into a family, adopt as a child," from ad- "to" (see ad-) + optare "choose, wish, desire" (see option (n.)).
1. She put up her daughter for adoption in 1967.
2. Adoption can fail for all kinds of reasons.
3. She put the baby up for adoption.
4. The senator urged against the adoption of the measure.