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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
was known as
Grammar usage guide and real-world examplesUSAGE SUMMARY
"was known as" is a correct and usable part of a sentence in written English.
You can use it to describe something that was once referred to by a different name or title. For example: The ancient city of Babylon, which was known as the "Gateway of the Gods," is located in modern-day Iraq.
✓ Grammatically correct
Science
News & Media
Wiki
Alternative expressions(20)
was referred to as
was formerly named
used to be known as
was recognized as
was identified as
was then called
was designated as
became known as
was renowned as
was ascertained as
currently known as
was previously known as
exactly known as
become known as
well known as
to be debated
to be called
to be designated
to be engage
to be named
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
Health officials in Louisiana said that of the 55 patients there whose ages were known, 24 were 60 or older.
News & Media
In cases where the motives were known, 116 homicides were gang related.
News & Media
If the event is known Si,k=1.
Science
The crystal structure of VAP-1 is known [27].
Science
In such a case, it is known [13, Chap.
A few polynomial special cases of PSAT are known [1].
The energy demand of the VLT is known [1].
Also, the dead core solution is known, (3.15).
Numerous different mechanisms of water adsorption are known [15].
Science
Lethal effect of silver nanoparticles on bacteria [139] and yeast [52] are known [53, 140].
Science
An overdate is known, 1887/6.
Wiki
Expert writing Tips
Best practice
When using "was known as", ensure the context clearly indicates why the subject had a different name or title. For example, specify if it was a historical name, a nickname, or a previous official designation.
Common error
Avoid using "is known as" when referring to something that was known by a different name only in the past. Use "was known as" for past references and "is known as" for current names or titles.
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "was known as" functions as a linking verb phrase establishing an equivalence between a subject and a former designation or identity. This phrase indicates that something had a specific name or title in the past. Examples in Ludwig illustrate this usage across diverse contexts.
Frequent in
Science
45%
News & Media
35%
Wiki
20%
Less common in
Formal & Business
0%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "was known as" is a grammatically sound and commonly used phrase to indicate a past name or title. Ludwig's analysis reveals its prevalence across diverse domains, including Science, News & Media, and Wiki. Its neutral register makes it appropriate for various contexts, while related phrases like "was referred to as" offer alternative ways to express the same meaning. When writing, remember to use "was known as" specifically for past designations and avoid confusing it with "is known as", which indicates a current name. According to Ludwig, its function is to provide historical context or explain a change in nomenclature. This phrase is essential for clarity and precision in historical, scientific, and general writing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
used to be known as
Suggests a change in name or title over time.
was referred to as
Highlights the act of mentioning or alluding to something by a particular name.
was formerly named
Highlights a previous official name.
was recognized as
Focuses on public acknowledgement rather than just a name or title.
was previously identified as
Indicates a change in identification or classification.
was identified as
Emphasizes the act of pinpointing or classifying something.
was then called
Focuses on a specific point in time when a particular name was used.
was designated as
Implies an official naming or labeling.
was traditionally called
Indicates a historical or customary name.
once went by the name of
Emphasizes a past identity or title.
FAQs
What's the difference between "was known as" and "is known as"?
"Was known as" refers to a name or title used in the past, while "is known as" indicates the current name or title. For example, "Constantinople was known as Byzantium" (past) versus "Paris is known as the City of Lights" (present).
What can I say instead of "was known as"?
You can use alternatives like "was referred to as", "was formerly named", or "used to be known as" depending on the specific context.
How to use "was known as" in a sentence?
Use "was known as" to indicate that a person, place, or thing had a different name or title in the past. For example, "The country was known as Persia before being renamed Iran."
Is it correct to say "was known by" instead of "was known as"?
While "was known by" isn't incorrect, it implies a different meaning. "Was known as" refers to a formal or common name, whereas "was known by" often implies a reputation or characteristic. For example, "He was known as a scholar" versus "He was known by his generosity".
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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
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested