adoption

American  

[uh-dop-shuhn] / əˈdɒp ʃən /

noun

1. the act or process of establishing a legal relationship between a child and a parent other than the child’s biological parent, thereby entrusting the designated adult with responsibility for raising the child.

   Have you considered growing your family through adoption?

2. the act or process of acquiring a pet, especially a stray or abandoned animal from an animal rescue organization.

   The shelter sees a rush of dog adoptions every June, when school lets out for summer.

3. the act of accepting, embracing, or starting to use something, as an idea, behavior, characteristic, or principle: Her friends and family were surprised by her adoption of European mannerisms and expressions after only one year abroad.

   The adoption of a new amendment was delayed by partisan bickering.

   Her friends and family were surprised by her adoption of European mannerisms and expressions after only one year abroad.

4. the state of being adopted.

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Usage

What does adoption mean? Adoption is the process of adopting another parent’s child—taking them into one’s custody, typically in a formal, legal way in order to permanently act as their parent or guardian. This most commonly involves an adult couple or a single adult adopting and raising a child who is no longer in the custody of either of their birth parents (biological parents), such as in cases where they have died or are otherwise unable to care for the child. This sense of adoption can also be used in reference to adopting an animal as a pet, such as from an animal shelter. The word is especially used this way when the animal had a previous caretaker. Adopt and adoption have many other more general meanings. Most generally, adopt means to choose or take as one's own. It can also mean to accept something or vote to approve it. In all cases, adoption is the act or process of adopting, or the state of having adopted. The adoption of a tradition or religion involves making it one’s own. The adoption of a plan involves approving it and acting according to its steps. Similarly, the adoption of a law involves the formal vote to approve it and the steps taken to follow and enforce it. Example: We’ve found an agency that will help us through the process of adoption.

Other Word Forms

• adoptional adjective
• nonadoption noun
• preadoption noun
• proadoption adjective
• readoption noun
• unadoptional adjective

Etymology

Origin of adoption

First recorded in 1300–50; Middle English adopcioun, from Latin adoptiōn-, stem of adoptiō; see ad-, option

Explanation

Adoption is the act of taking something on as your own. Adoption usually refers to the legal process of becoming a non-biological parent, but it also refers to the act of embracing ideas, habits, or free kittens. Adoption comes from the Old French word adoptare, meaning "to chose for oneself.” Feel like adding an option? Try adoption. Adoption is the noun form of adopt, so it not only refers to legally taking another person into your family, it can be any time you take something on as your own. If you start dressing like a friend, that's an adoption of your friend's style. If that friend wears micro-miniskirts, your parents might put you up for adoption.

Example Sentences

For investors, the war has unfolded against the backdrop of the almost universal adoption of index funds that are cheap as dirt and easy as pie.

From The Wall Street Journal • Apr. 17, 2026

But there could be some bright spots before that, including adoption of Copilot Cowork and Microsoft 365 E7, the company’s AI-driven enterprise subscription platform due to be rolled out next month, according to Wood.

From MarketWatch • Apr. 16, 2026

He predicts the stock could be “range-bound” until the company is able to accelerate its Azure growth or further drive Copilot adoption.

From MarketWatch • Apr. 16, 2026

Prioritizing the application of AI where it matters most and constant adoption is what will make a difference, he adds.

From The Wall Street Journal • Apr. 15, 2026

I heard the cats in the back hissing and the adoption center dogs barking danger barks.

From "Please Ignore Vera Dietz" by A.S. King

Related Words

• acceptance
• approval
• enactment
• endorsement
• maintenance
• ratification