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
this is known as
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "this is known as" is correct and usable in written English.
You can use it to introduce an alternative name or descriptor for something. For example, "This type of food dish is known as 'Pad Thai'."
✓ Grammatically correct
Wiki
News & Media
Science
Encyclopedias
Alternative expressions(20)
this is called
this is referred to as
this is termed
it is also known as
this is recognized as
this is understood as
this is designated as
this goes by the name of
this is what they are
this is identified as
this is translated as
this is suggested as
this is termed as
this is viewed as
this is explained as
this is what they call
this is the term they use
such is called
it is designated as
the hypothesis is that
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
This is known as impingement.
News & Media
This is known as "sniping".
News & Media
This is known as "commodity hell".
News & Media
This is known as intersectional discrimination.
News & Media
This is known as the scatter force.
News & Media
This is known as lossy compression.
News & Media
This is known as the base rate.
News & Media
This is known as "filling the tree".
News & Media
This is known as a liquidity ratio.
Encyclopedias
This is known as fallibilism.
Science
This is known as steganography.
News & Media
Expert writing Tips
Best practice
Use "this is known as" to introduce specific terms or labels, ensuring clarity and providing context for readers unfamiliar with the subject.
Common error
Avoid using "this is known as" excessively in casual writing. Simpler alternatives like "this is called" might be more appropriate in less formal settings.
Source & Trust
80%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "this is known as" functions as an identifying expression, used to introduce and define a term or concept. Ludwig examples show that this phrase is used to label phenomena, processes, or items.
Frequent in
Wiki
36%
News & Media
23%
Science
12%
Less common in
Encyclopedias
5%
Formal & Business
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "this is known as" is a versatile phrase used to introduce and define specific terms or concepts. As Ludwig AI and numerous examples confirm, it is grammatically sound and widely applicable. Predominantly found in Wiki, News & Media, and Scientific contexts, it aims to provide clarity and definition, with a neutral register suitable for both formal and informal communication. When writing, remember that simpler alternatives such as "this is called" might be more appropriate for very informal settings.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
this is called
Offers a simpler and more direct alternative.
it is also known as
Adds emphasis on the alternative nature of the term.
this is referred to as
Replaces "known" with "referred", implying a formal designation.
this is commonly known as
Emphasizes the widespread use of the term.
this is recognized as
Highlights public or expert acknowledgement.
this is termed
Uses "termed" to suggest a specific or technical vocabulary.
this is understood as
Focuses on common interpretation or comprehension.
this is designated as
Emphasizes a formal assignment of a name or function.
this is known by the name of
Adds a more detailed specification about the naming process.
this goes by the name of
Provides a more conversational way to introduce an alternate name.
FAQs
How can I use "this is known as" in a sentence?
Use "this is known as" to introduce a specific term or label. For example, "The process of converting light into chemical energy "this is known as photosynthesis"."
What are some alternatives to "this is known as"?
You can use alternatives like "this is called", "this is referred to as", or "this is termed" depending on the context and desired level of formality.
Is it correct to say "this is know as" instead of "this is known as"?
No, "this is know as" is grammatically incorrect. The correct phrase is "this is known as", using the past participle of the verb 'to know'.
What's the difference between "this is known as" and "this is defined as"?
"This is known as" introduces a common or accepted term, while "this is defined as" provides a formal definition. The former is broader and less strict.
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
80%
Authority and reliability
4.1/5
Expert rating
Real-world application tested