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
defined into
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "defined into" is not correct and is not commonly used in written English.
It is typically used incorrectly when trying to express the idea of something being defined or categorized within a certain context or framework. Example: "The parameters of the project were defined into specific categories for better understanding."
⚠ May contain grammatical issues
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified similar examples from authoritative sources
Similar Expressions
60 human-written examples
In practice, we defined 700 adjacent SNPs as a bin.
Science & Research
Were the inclusion and exclusion criteria clearly defined? 2 = clearly defined; 1 = inadequately defined; 0 = not defined. 2 = clearly defined; 1 = inadequately defined; 0 = not defined.
Science
Were the outcome measures used clearly defined (by outcome)? 2 = clearly defined; 1 = inadequately defined; 0 = not defined. 2 = clearly defined; 1 = inadequately defined; 0 = not defined.
Science
where we have defined (34).
We defined 4 "study cohorts".
Science
Virus phenotype was defined [69].
Science
The combined dataset defined 28 unique haplotypes.
Science
We define 2 global variables.
These guidelines follow the American Diabetes Association ADAA) criteria to define T2D.
Science & Research
We define 33 global mesopelagic ecoregions.
Academia
Similarly, define (215).
Expert writing Tips
Best practice
Avoid using "defined into". Instead, opt for more grammatically sound alternatives like "defined as", "categorized as", or "classified as".
Common error
A common mistake is forcing "into" where other prepositions like "as", "within", or "by" are more appropriate. Always consider the correct prepositional relationship when defining terms.
Source & Trust
60%
Authority and reliability
1.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "defined into" is grammatically incorrect. The standard construction involves using prepositions like 'as', 'by' or 'within' after 'defined'. Ludwig AI indicates this phrase is not commonly used.
Frequent in
Science
0%
News & Media
0%
Formal & Business
0%
Less common in
Science
0%
News & Media
0%
Formal & Business
0%
Ludwig's WRAP-UP
The phrase "defined into" is generally considered grammatically incorrect. Ludwig AI confirms this assessment, showing that the phrase is not commonly used in written English. Instead, use alternatives like "defined as", "categorized as", or "classified as" to accurately convey the intended meaning of defining or categorizing something. When defining terms, ensure you use the correct preposition to maintain grammatical accuracy and clarity.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
defined as
Uses a more standard preposition "as" instead of "into" to indicate definition.
categorized as
Replaces "defined" with "categorized" to offer a slightly different nuance but similar meaning.
classified as
Similar to "categorized as", but with a focus on systematic grouping.
considered to be
Offers a more subjective framing of the definition.
regarded as
Similar to "considered to be", emphasizing perception.
identified as
Focuses on the act of recognizing and specifying something.
specified as
Highlights the act of detailing or making explicit.
designated as
Emphasizes the act of formally assigning a category or role.
labeled as
Focuses on assigning a descriptive term.
characterized by
Shifts the focus to the attributes that define something.
FAQs
What's a correct alternative to "defined into"?
The phrase "defined into" is not standard English. More appropriate alternatives include "defined as", "categorized as", or "classified as".
How can I use "defined" correctly in a sentence?
Use "defined" with prepositions like "as", "by", or "within". For example, "The term is defined as a specific set of criteria" is correct.
Is it ever appropriate to use "defined into"?
No, "defined into" is generally considered grammatically incorrect. It's best to avoid this phrase in formal writing and speech.
What's the difference between "defined as" and "defined into"?
"Defined as" is the standard and grammatically correct way to express how something is defined. "Defined into" is not a recognized construction and should be avoided.
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
60%
Authority and reliability
1.5/5
Expert rating
Real-world application tested