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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
zones in which
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "zones in which" is correct and usable in written English.
It can be used to describe specific areas or regions characterized by certain conditions or features. Example: "The study focused on zones in which biodiversity is rapidly declining due to climate change."
✓ Grammatically correct
News & Media
Science
Academia
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
Second, these gender gaps vary substantially across counties and commuting zones in which children grow up.
Academia
He is a masterly, droll manipulator of exhibition spaces as zones in which art overlaps with life.
News & Media
The labyrinthine interior is loosely subdivided into four "intertropical zones" in which visitors may navigate at leisure.
Academia
Both forsterite and monticellite typically develop in the zones in which igneous intrusions make contact with dolomites.
Encyclopedias
Lambrusco is both the name of the grape and the name of the official zones in which it is made.
News & Media
The aim seems to be to create Shia-free zones in which Isis can establish its fundamentalist Sunni caliphate.
News & Media
He found three major combat zones in which to achieve his dreams — war, politics and movie-making — and he writes about each in a different manner.
News & Media
The hard-to-reach areas are zones in which starvation sieges have been enforced by the Syrian regime or its proxies throughout the five-year war.
News & Media
Now Laskar and his team have reduced the search area by 50% by eliminating two zones in which they say the modelling does not match reality.
News & Media
The existing government plan is for clean air zones – in which polluting diesel vehicles are charged to enter city centres – in just six UK cities.
News & Media
As well as studying the commercial potential of these natural "geobioreactors", the company is charting various zones in which these organisms exist.
News & Media
Expert writing Tips
Best practice
Use "zones in which" to clearly define areas or regions that share specific characteristics or conditions. This construction is suitable for formal and technical writing.
Common error
Avoid using "zones in which" in casual conversation or informal writing. Simpler alternatives like "areas where" or just "where" can be more appropriate.
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "zones in which" functions as an adjectival phrase introducing a relative clause. It modifies a noun (typically "zones", "areas", or similar terms) by specifying the conditions or characteristics that define those zones. Ludwig confirms its grammatical correctness and wide usage.
Frequent in
News & Media
33%
Science
42%
Academia
8%
Less common in
Encyclopedias
3%
Formal & Business
2%
Reference
1%
Ludwig's WRAP-UP
In summary, "zones in which" is a grammatically sound and frequently used phrase to precisely define regions based on specific characteristics or conditions. As indicated by Ludwig, its use is prevalent in news, scientific, and academic contexts. While it offers clarity and precision, simpler alternatives like "areas where" or "where" might be more suitable for informal communication. Remember to consider the context and audience when choosing this phrase for your writing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
areas where
This is a more concise and direct substitute, replacing "in which" with the single word "where".
regions where
Similar to "areas where", this uses "regions" to specify a geographical extent, maintaining a high degree of interchangeability.
places where
A simple and common substitute using "places" to denote areas, suitable for many contexts.
spaces in which
This focuses on more abstract or conceptual locations, providing a slightly broader interpretation.
locations where
This alternative emphasizes specific points or sites, offering a more pinpointed sense of place.
sectors in which
Emphasizes areas of activity, control, or governance rather than purely physical locations.
settings where
Suggests a particular context or background in which something occurs.
environments where
This phrase is useful when referring to the surrounding conditions and influences of a particular setting.
domains in which
A more formal term, suitable for discussing areas of knowledge, influence, or activity.
circumstances in which
Shifts the focus to the situational conditions that define an area or scenario, useful in abstract contexts.
FAQs
How can I use "zones in which" in a sentence?
Use "zones in which" to specify areas characterized by particular features or conditions. For example, "The study focused on "zones in which" biodiversity is rapidly declining".
What are some alternatives to "zones in which"?
Alternatives include "areas where", "regions where", or simply using "where" depending on the context.
Is there a difference between "zones in which" and "areas where"?
While both are similar, "zones in which" is generally more formal. In many cases, "areas where" is a perfectly acceptable and often preferable alternative.
When is it appropriate to use "zones in which"?
It is most appropriate in formal writing, scientific reports, or technical documents where precision and clarity are important. Consider using simpler alternatives in less formal 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
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested