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
is called
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "is called" is correct and usable in written English.
You can use it to introduce an alternative name for something. For example, "The Amazon rainforest, also known as the 'Lungs of the Planet', is called the world's largest rainforest."
✓ Grammatically correct
News & Media
Wiki
Science
Alternative expressions(20)
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 called progress.
News & Media
It is called reality.
News & Media
It is called history.
News & Media
That is called seduction.
News & Media
This is called implantation.
Encyclopedias
It is called lastrhodesian.com.
News & Media
It is called "No.
News & Media
It is called Ukip.
News & Media
It is called sharing.
News & Media
This is called Nest.
News & Media
It is called "Gut".
News & Media
Expert writing Tips
Best practice
Use "is called" when introducing a specific term or name for something, ensuring clarity and avoiding ambiguity.
Common error
Avoid using "is called" without a clear and specific referent. For example, instead of saying "This is called important", provide a specific term or concept: "This concept is called 'the butterfly effect'".
Source & Trust
79%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The primary grammatical function of "is called" is as a passive verb phrase used to name or identify a subject. Ludwig examples illustrate its use in defining terms and introducing concepts.
Frequent in
Wiki
34%
News & Media
32%
Science
10%
Less common in
Encyclopedias
5%
Formal & Business
3%
Academia
0%
Ludwig's WRAP-UP
In summary, "is called" serves as a versatile and grammatically sound phrase used to introduce names or terms. Its prevalence across various sources like News & Media and Wiki, as indicated by Ludwig, demonstrates its widespread applicability. While similar phrases like "is known as" or "is referred to as" exist, "is called" maintains a neutral tone suitable for both formal and informal contexts. The key is to ensure clear references to avoid vagueness.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
is referred to as
This alternative uses "referred to" instead of "called", emphasizing the act of referencing something.
is known as
This alternative highlights the familiarity or common knowledge of a name or term.
is termed
This alternative is more formal and often used in technical or academic contexts.
goes by the name of
This alternative is more descriptive and emphasizes the act of using a particular name.
is designated as
This alternative suggests a formal or official assignment of a name or label.
is labeled
Focuses on the act of assigning a label.
is identified as
This alternative emphasizes the act of recognizing or classifying something.
is classified as
Highlights the organization or categorization of something
is styled
Suggests a specific way of naming something
can be defined as
Focuses on the definition or explanation of a term.
FAQs
How can I use "is called" in a sentence?
Use "is called" to introduce a name or term for something. For example, "The process of converting data into a specific format "is called encoding"".
What's the difference between "is called" and "is known as"?
"Is called" is used to introduce a specific term or name, while "is known as" implies that the name is widely recognized. For example, a common term "is known as" a common knowledge.
What are some alternatives to using "is called" in formal writing?
In formal writing, you can use alternatives like "is termed", "is designated as", or "is referred to as" to maintain a professional tone.
When is it appropriate to use "is called" versus other similar phrases?
Use "is called" when you want to clearly and directly state the name of something. It's appropriate in both formal and informal contexts, while other phrases might imply different levels of familiarity or formality.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
79%
Authority and reliability
4.5/5
Expert rating
Real-world application tested