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Adoptor vs. Adopter: What's the Difference?

Edited by Harlon Moss || By Janet White || Updated on October 5, 2023
"Adoptor" is an uncommon and likely incorrect variant, while "Adopter" refers to someone or something that adopts.

Key Differences

Adoptor and Adopter might seem similar, but their usage and acceptance in the English language vary. Adoptor is rarely used and is generally considered an erroneous version of Adopter.
Adopter is the standard term for a person or entity that adopts—whether it's adopting a child, a pet, or a new technology. Adoptor, on the other hand, doesn't find its place in recognized dictionaries and is typically a typo or misunderstanding of the correct term.
When we speak of the early users of a new technology, the term "early Adopter" is used. Adoptor would not be appropriate or recognized in this context.
If one were to come across the word Adoptor in literature or a document, it's safe to assume it's an oversight or error, and "Adopter" was likely the intended word. In contrast, Adopter is the universally recognized and correct term for someone or something that adopts.
It's always advisable to use Adopter in written and spoken English to convey the act or state of adopting. Using Adoptor might lead to confusion or be seen as a grammatical error.

Comparison Chart

Dictionary Presence

Not found in most recognized dictionaries
Found in standard dictionaries


Rarely used, often mistakenly
Standard term for someone/something that adopts

Example Context

Adopting a child, pet, or technology


Considered a typo or error
Correct term


Common and universally recognized

Adoptor and Adopter Definitions


Alternative form of adopter


A person or entity that adopts.
She was a proud adopter of a rescued puppy.


An uncommon and likely erroneous variant of "Adopter".
The document had the word Adoptor which seemed out of place.


One who accepts or takes on a certain attitude or approach.
She was a keen adopter of the minimalist lifestyle.


A country or state that accepts a particular treaty or agreement.
The nation was a key adopter of the climate agreement.


An entity that takes up and makes something its own.
The company was a major adopter of green energy solutions.


An individual or organization that begins to use something new or innovative.
He was an early adopter of the latest tech gadgets.


To take on the legal responsibilities as parent of (a child that is not one's biological child).


To become the owner or caretaker of (a pet, especially one from a shelter).


To take and follow (a course of action, for example) by choice or assent
Adopt a new technique.


To take up and make one's own
Adopt a new idea.


To move to or resettle in (a place).


To take on or assume
Adopted an air of importance.


To vote to accept
Adopt a resolution.


To choose as standard or required in a course
Adopt a new line of English textbooks.


One who adopts


One who adopts.


A receiver, with two necks, opposite to each other, one of which admits the neck of a retort, and the other is joined to another receiver. It is used in distillations, to give more space to elastic vapors, to increase the length of the neck of a retort, or to unite two vessels whose openings have different diameters.


A person who adopts a child of other parents as his or her own child


What does "Adopter" mean?

"Adopter" refers to a person or entity that adopts, whether a child, pet, or technology.

Can "Adoptor" be used in place of "Adopter"?

It's recommended to use "Adopter." Using "Adoptor" may be seen as a grammatical error.

Is "early Adoptor" a correct phrase?

The correct phrase is "early Adopter," referring to early users of a new technology.

Does "Adopter" only refer to adopting children?

No, "Adopter" can refer to adopting children, pets, technologies, lifestyles, and more.

Can "Adopter" refer to countries?

Yes, a country can be an "Adopter" of treaties, policies, or standards.

Is "Adoptor" found in standard dictionaries?

Typically, "Adoptor" is not found in recognized dictionaries, whereas "Adopter" is.

Can "Adopter" refer to a mindset or approach?

Yes, one can be an adopter of a specific mindset or approach to life.

Which is more common, "Adoptor" or "Adopter"?

"Adopter" is the standard and commonly recognized term.

Is "Adoptor" a recognized word in the English language?

No, "Adoptor" is not commonly recognized and is often considered an error for "Adopter."

How should I remember the correct term between "Adoptor" and "Adopter"?

Stick to "Adopter" as the recognized term for someone or something that adopts.

Are there variations of the word "Adopter"?

While "Adopter" is standard, context might bring variations like "early Adopter" or "key Adopter."

Is there any historical usage of the term "Adoptor"?

There isn't a notable historical context for "Adoptor"; "Adopter" is the standard term throughout history.

Is it a typo if I see "Adoptor" in a document?

Most likely, "Adoptor" is a typo or oversight, with "Adopter" being the intended term.

Should I correct someone if they use "Adoptor"?

It's advisable to gently inform them that "Adopter" is the standard term.

Are there any contexts where "Adoptor" is preferred?

"Adopter" is the universally accepted term; "Adoptor" is generally seen as incorrect.

Can I use "Adopter" in formal writing?

Absolutely, "Adopter" is appropriate for both formal and informal contexts.

Can an idea be adopted?

Yes, one can be an adopter of ideas, philosophies, or principles.

If I come across "Adoptor" in a text, how should I interpret it?

It's best to interpret "Adoptor" as likely being a typo or error for "Adopter."

Can a company be an "Adopter"?

Yes, companies can be adopters of technologies, strategies, or practices.

How do dictionaries define "Adopter"?

Dictionaries define "Adopter" as someone or something that adopts or takes up something.
About Author
Written by
Janet White
Janet White has been an esteemed writer and blogger for Difference Wiki. Holding a Master's degree in Science and Medical Journalism from the prestigious Boston University, she has consistently demonstrated her expertise and passion for her field. When she's not immersed in her work, Janet relishes her time exercising, delving into a good book, and cherishing moments with friends and family.
Edited by
Harlon Moss
Harlon is a seasoned quality moderator and accomplished content writer for Difference Wiki. An alumnus of the prestigious University of California, he earned his degree in Computer Science. Leveraging his academic background, Harlon brings a meticulous and informed perspective to his work, ensuring content accuracy and excellence.

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