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
locus classicus
Grammar usage guide and real-world examplesUSAGE SUMMARY
"locus classicus" is a correct and usable phrase in written English.
It is used to refer to a source that establishes or is often referred to in order to set a precedent. For example, "The locus classicus of this school of thought is the philosopher's essay on the subject."
✓ Grammatically correct
News & Media
Science
Encyclopedias
Alternative expressions(4)
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
58 human-written examples
The movie "When Harry Met Sally... ...... provides the locus classicus.
News & Media
Here the locus classicus is Naomi Orestes and Erik Conwayy's Merchants of Doubt.
News & Media
It has become a standard text, a locus classicus: but not with the revolutionary left, exactly.
News & Media
Saval ties his essay to "Bartleby, the Scrivener," Herman Melville's locus classicus of clerical work.
News & Media
The Maysles' movie Salesman was to be a locus classicus in this field, freighted with implied irony and tragedy.
News & Media
Mostly, as in London, this reality is tucked away under layers of propaganda, although the locus classicus remains Montreal 1976.
News & Media
Cuba, the locus classicus of Third-World revolt, offered a good stage.
News & Media
The O.E.D. calls such a citation "the locus classicus for this modern sense though occasional earlier uses are recorded".
News & Media
And, of course, at the centre of the work, we have the deathless Trimalchio, whose famous feast remains, and always will remain, the locus classicus of tasteless ostentation.
News & Media
Alfred Hitchcock, Nicholas Ray, John Cassavetes, Otto Preminger are justly considered consummate artists; "The Man Who Shot Liberty Valance" is a locus classicus of the political cinema.
News & Media
Although elements of the theory can be found in Aristotle's Politics, the locus classicus is Book VI of Polybius's Histories.
Encyclopedias
Expert writing Tips
Best practice
When using "locus classicus", ensure the reference is genuinely foundational and widely recognized in its field to avoid misapplication.
Common error
Avoid using "locus classicus" to describe merely significant examples; reserve it for sources that are truly seminal and have shaped discourse in a discipline.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "locus classicus" functions as a noun phrase, identifying a source that is considered the most authoritative or definitive on a particular topic. As Ludwig AI confirms, it is a valid and usable phrase. Examples in Ludwig show its use in referring to seminal texts and events.
Frequent in
Science
34%
News & Media
32%
Encyclopedias
15%
Less common in
Formal & Business
10%
Wiki
4%
Reference
3%
Ludwig's WRAP-UP
In summary, "locus classicus" is a Latin phrase used in English to denote a definitive or authoritative source on a particular subject. As Ludwig AI explains, the phrase is grammatically sound and commonly used, especially in academic, scientific, and news contexts. Its function is to signal the importance of a source as foundational or seminal. The phrase's formality restricts its use to more scholarly or professional settings. While there are alternatives like "classic example" or "definitive example", "locus classicus" maintains a distinct connotation of established authority and widespread recognition.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
classic example
Focuses on the example being representative, rather than a specific source.
definitive example
Emphasizes the conclusiveness and authority of the example.
archetypal instance
Highlights the pattern-setting nature of the instance, implying it serves as a model.
paradigmatic case
Stresses that the case exemplifies a wider principle or theory.
quintessential model
Implies the example is the purest or most representative of its kind.
standard reference
Highlights the role of the example as a benchmark for comparison.
illustrative case
Focuses on the example's ability to clarify or explain a concept.
prime illustration
Suggests the example is among the best available to demonstrate a point.
key precedent
Emphasizes the value of the example to establish legal or procedural norms.
original source
Points to the first known or most influential source of an idea or practice.
FAQs
How to use "locus classicus" in a sentence?
Use "locus classicus" to refer to a definitive or authoritative passage or source on a particular topic. For instance, "Plato's Republic is often considered the "locus classicus" for discussions on justice".
What does "locus classicus" mean?
"Locus classicus" refers to a place or passage that serves as the most authoritative or standard example of something. It often refers to a piece of writing or a specific location that is central to understanding a concept or field.
Which is correct, "locus classicus" or "classical locus"?
"Locus classicus" is the correct and established Latin term. "Classical locus" is not a standard phrase and should be avoided.
What can I say instead of "locus classicus"?
Depending on the context, you can use alternatives like "classic example", "definitive example", or "archetypal instance". These phrases convey the sense of a standard or foundational source.
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
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested