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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 it is called
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "as it is called" is correct and usable in written English.
You can use it when referring to a term or name that is commonly used to describe something. Example: "The phenomenon is known as the butterfly effect, as it is called in chaos theory."
✓ Grammatically correct
News & Media
Wiki
Science
Alternative expressions(20)
as it's known
as it is referred to
that is to say
as it is termed
as it is known as
as it is designated
as it is styled
as we call it
as it is known
as it is categorized
as it is fired
as it is caught
as it is visited
as it is canceled
as it is appealed
as is known as
because it is called
because that is called
as it s called
as the latter is called
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
54 human-written examples
The Segway Robotic Mobility Platform, as it is called, has its quirks.
News & Media
Now the box trade, as it is called, is in the midst of its first decline.
News & Media
"Spore Creatures," as it is called, is a linear adventure similar to its PC counterpart.
News & Media
EXPERIMENTAL economics, as it is called, is a growth industry.
News & Media
The Spaceship, as it is called, is almost ready.
News & Media
And now the Jungle, as it is called, has developed.
News & Media
But this "pattern of progress," as it is called, has an ornate, miscellaneous character.
News & Media
Project Morrinho, as it is called, is seeking to put that right.
News & Media
PREPARATION Altitude sickness, or mal de montaña as it is called in Mexico, can be deadly.
News & Media
Hartz IV, as it is called, merges social-security payments with the unemployment-benefit system.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
1 human-written examples
Act 154, as it is called, sounds pretty boring.
News & Media
Expert writing Tips
Best practice
When using this phrase, ensure that the term you are introducing is indeed a commonly recognized name or designation for the subject.
Common error
Avoid using "as it is called" with terms that are already widely understood by your target audience; this can come across as condescending or unnecessary. For example, don't say "Water, as it is called, is essential for life" unless you are addressing a very specific audience.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "as it is called" functions as an appositive phrase, providing additional information about a preceding noun or noun phrase. It indicates that the term being used is a specific name or designation. As Ludwig AI confirms, this is grammatically correct and widely used.
Frequent in
News & Media
74%
Wiki
9%
Science
6%
Less common in
Formal & Business
3%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "as it is called" is a versatile phrase used to introduce or clarify specific terms, functioning as an appositive to provide context. According to Ludwig AI, the phrase is grammatically sound and widely used, commonly appearing in news and media, wiki, and scientific sources. While alternatives like "as it's known" or "as it is referred to" exist, "as it is called" remains a standard choice for ensuring clarity and avoiding ambiguity in writing. Remember to avoid using it with already well-known terms to maintain a professional and engaging tone. Finally it's important to add that this is a flexible and suitable expression for almost all writing contexts, with the exception of rare instances of over-formality.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
as it's known
Contraction of "it is" to "it's".
as it is referred to
Uses "referred to" instead of "called".
as it is known as
Adds "as" at the end for slight emphasis.
as it is termed
Uses "termed" which is more formal than "called".
as it is designated
Uses "designated" which implies a formal naming.
as it is styled
Uses "styled" implying a specific presentation or naming choice.
by that name
A shorter, more concise way of indicating a common name.
under that name
Similar to "by that name" but emphasizes official use of the name.
as we call it
Adds a personal touch, indicating the speaker's usage.
that is to say
Introduces a clarification or explanation of the term.
FAQs
How can I use "as it is called" in a sentence?
You can use "as it is called" to introduce or clarify a term, for example: "The Segway Robotic Mobility Platform, "as it is called", has its quirks."
What's the difference between "as it is called" and "as it is known as"?
Both phrases serve a similar purpose, but "as it is called" simply indicates a name, while "as it is known as" implies a recognized or established designation. The semantic is very similar in most contexts, though.
What can I say instead of "as it is called"?
You can use alternatives like "as it's known", "as it is referred to", or "that is to say" depending on the context.
Is "as it is called" formal or informal?
"As it is called" is generally considered neutral and can be used in both formal and informal writing. However, more formal alternatives like "as it is termed" might be preferred in certain contexts.
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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
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested