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
a key illustration
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "a key illustration" is correct and usable in written English.
It can be used when referring to an important example or representation that helps clarify or support a point being made. Example: "The study provided a key illustration of the impact of climate change on local ecosystems."
✓ Grammatically correct
Science
News & Media
Alternative expressions(20)
a major example
a prime exemplar
a striking case
a telling case
a perfect illustration
for instance
a graphic portrayal
one such case
one particular example
consider the case of
a striking instance
a prime illustration
a clear illustration
a crucial example
a notable instance
a excellent example
a significant example
a prime instance
a case in point
to demonstrate
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
3 human-written examples
A central element of the design philosophy that shaped the Internet is the end-to-end argument, and a key illustration of the argument is provided by the congestion avoidance algorithm of the transmission control protocol (TCP).
Science
A key illustration of this is the rapid emergence of social computing, that is supporting social behaviours in distributed systems through tools such as wikis, blogs, and social networking sites.
A key illustration of the shortcomings of the New York Times reporting: the description of the deal is so muddled as to be incomprehensible, which suggests not onlydid she not understand it, she did not consult anyone with expertise in the CDO market.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
57 human-written examples
Each case includes a classroom presentation in a PowerPoint® format that includes key illustrations and data sets.
But it won't pay the thousands of people who participate in creating the wiki pages — just artists who create "key illustrations" for the site.
News & Media
It addresses three key illustrations of the success of CWE: (1) the establishment of CWE as an individual research and application area in wind engineering with its own successful conference series under the umbrella of the International Association of Wind Engineering (IAWE); (2) the increasing range of topics covered in CWE; and (3) the history of overview and review papers in CWE.
The overall estimate is based on gaps in the text and the absence of certain key illustrations.
Wiki
Respondents' comments included in this paper are chosen as key illustrations of main emerging themes [ 3].
Science
The book aims to leave the reader with a clear understanding of the main point of the diagram and enables him or her to explain the key illustrations, definitions, and derivations to others.
Science
This is another illustration of a key proposition in diplomacy that the current administration doesn't seem to understand: American national security is not a talk show, and dead air is okay.
News & Media
As such, pain and temperature provide a paradigmatic illustration of a key principle of cortical neurobiology (Mesulam, 1998; Craig, 2002, 2009) and an ideal probe of large-scale brain network operations in neurodegenerative disease (Zhou and Seeley, 2014).
Science
Expert writing Tips
Best practice
Use "a key illustration" to introduce a specific example that effectively supports your argument or clarifies a concept for your audience. It is useful in academic papers, business reports, and everyday conversation.
Common error
Avoid using "a key illustration" too frequently in a single piece of writing. Vary your language by using synonyms such as "a prime example" or "a significant instance" to maintain reader engagement and avoid repetition.
Source & Trust
85%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
A key illustration functions as a noun phrase, typically used to introduce or highlight a significant example that supports a particular argument or concept. As indicated by Ludwig AI, this phrase is considered grammatically correct and usable in English. It serves to emphasize the importance of the example being presented.
Frequent in
Science
33%
News & Media
33%
Formal & Business
33%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "a key illustration" is a grammatically correct phrase used to introduce a significant example or representation. As highlighted by Ludwig AI, this phrase is considered standard English. It’s suitable for various contexts, but is most frequently seen in science, news & media, and formal business communication. While the phrase isn't extremely common, using it effectively can enhance clarity and provide strong support for your arguments. Remember to vary your language and avoid overuse by using alternatives like ""a prime example"" or ""a significant instance"" to keep your writing engaging.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
a crucial instance
Emphasizes that the instance is critical or essential.
a prime example
Focuses on the idea of something being a top or leading example.
a striking case
Stresses that the case is particularly noticeable or impressive.
a significant instance
Emphasizes the importance and noteworthiness of the example.
a telling case
Highlights that the example reveals or indicates something important.
a revealing demonstration
Stresses how the example uncovers or shows something clearly.
a graphic portrayal
Highlights the vivid and detailed nature of the illustration.
a notable depiction
Highlights the quality and importance of the illustration.
a classic representation
Refers to something that exemplifies a category or type.
an important representation
Focuses on how something acts as a symbol or model.
FAQs
How can I use "a key illustration" in a sentence?
You can use "a key illustration" to introduce an important example that supports your point, like in this sentence: "The study provided "a key illustration" of the impact of climate change."
What are some alternatives to "a key illustration"?
Alternatives include "a prime example", "a significant instance", or "a telling case", depending on the specific nuance you want to convey.
Is it better to say "a key illustration" or "an important example"?
Both "a key illustration" and "an important example" are correct, but "a key illustration" specifically highlights the visual or descriptive nature of the example, whereas "an important example" is more general.
When is it appropriate to use "a key illustration" in writing?
It's appropriate to use "a key illustration" when you want to emphasize that the example you are providing is not just any example, but one that is particularly insightful or revealing in understanding the broader topic.
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
85%
Authority and reliability
4.1/5
Expert rating
Real-world application tested