Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
as defined
Grammar usage guide and real-world examplesUSAGE SUMMARY
"as defined" is correct and usable in written English.
It is typically used to introduce a definition or specific meaning of a term or concept. Example: According to Merriam-Webster, a "metrosexual" is a heterosexual male who spends a significant amount of time and money on his appearance and lifestyle, as defined by popular culture.
✓ Grammatically correct
Science
News & Media
Alternative expressions(20)
according to the definition of
by definition
as stipulated
as per the definition
specifically
namely
that is to say
in other words
to put it another way
well defined
thus defined
better defined
was defined
is defined
best defined
according to the definition given
according to the information given
as a matter of definition
by its very definition
according to the definition
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
60 human-written examples
criteria as defined by bank.
News & Media
as defined by the International Labour Organisation.
News & Media
Drawing, as defined here, isn't authorship.
News & Media
That's as defined as mush.
News & Media
Medaglia d'Oro's status isn't quite as defined.
News & Media
Smith: You're not as defined in L.A.
News & Media
What are "retronyms," as defined by the author?
News & Media
What is "intelligent design," as defined by the article?
News & Media
"Conservative," as defined here, is often not the best approach.
News & Media
The social web as defined by entreprenuers.
News & Media
As defined by Eqs.
Science
Expert writing Tips
Best practice
When using "as defined", ensure that the definition you are referring to is clear and accessible to your audience. Cite the source of the definition if necessary.
Common error
Avoid using "as defined" without providing context or reference to where the definition can be found. This can leave your audience confused about the intended meaning.
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "as defined" functions as an adverbial phrase, modifying a verb or clause by specifying the source or origin of a definition. It indicates that the meaning of a term or concept is being presented according to a particular authority or established understanding. This is confirmed by Ludwig AI's analysis of numerous examples.
Frequent in
Science
41%
News & Media
35%
Formal & Business
24%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "as defined" is a versatile phrase used to introduce or clarify a definition, ensuring precision and avoiding ambiguity. Ludwig AI analysis confirms its widespread usage across diverse contexts, predominantly in science, news media, and formal business settings. While grammatically correct and frequently employed, remember to provide sufficient context or reference the source of the definition for clarity. Alternatives like "according to the definition of" or "by definition" may be suitable depending on the desired level of formality and emphasis.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
according to the definition of
This alternative is more explicit, specifying that the definition comes from a particular source.
by definition
This alternative is more concise, implying that the definition is inherent to the term itself.
in accordance with the definition
This alternative is more formal, emphasizing adherence to a specific definition.
as stipulated
This alternative is most suitable when referring to something that has been formally agreed or specified in a document or contract.
as per the definition
This alternative is commonly used, borrowing from legal and formal language but applicable in less official contexts too.
specifically
This alternative emphasizes the precise nature of what follows, implying a definition is being provided.
namely
This alternative introduces a specification or definition by name.
that is to say
This alternative introduces a clarification or restatement of a concept, similar to providing a definition.
in other words
This alternative introduces a simplified or rephrased explanation of a concept, functioning like a definition.
to put it another way
This alternative is a more conversational way to introduce a rephrasing or definition.
FAQs
How can I use "as defined" in a sentence?
You can use "as defined" to refer to a specific definition of a term, for example: "A 'retronym', "as defined" by the author, is a neologism created because an older term has become ambiguous."
What are some alternatives to the phrase "as defined"?
Alternatives include phrases like "according to the definition of", "by definition", or "in accordance with the definition", depending on the context and level of formality you want to convey.
Is it necessary to cite the source when using "as defined"?
While not always mandatory, citing the source when using "as defined" enhances clarity and credibility, especially in academic or formal writing. If a term has multiple definitions, specifying which one you are using is crucial.
What's the difference between ""as defined"" and "by definition"?
"As defined" usually refers to a specific definition provided elsewhere, while "by definition" implies that the meaning is inherent or universally understood. For example, "A square, by definition, has four equal sides," versus "A 'metrosexual', as defined by the dictionary, is a heterosexual male...".
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested