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
interval over which
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "interval over which" is correct and usable in written English.
It can be used to describe a specific duration or range of time during which an event occurs or a condition is applicable. Example: "The data was collected over an interval over which the temperature remained constant."
✓ Grammatically correct
Science
News & Media
Formal & Business
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
He was concerned both that the Committee did not have enough information to be specific on the time interval over which it expected low rates to be maintained, and that, were it to do so, the Committee risked appearing overly responsive to the recent financial market volatility.
News & Media
The time interval over which the equation spans.
For the identified application, identify the interval over which this resource has to be allocated.
Science
The exponential stability condition is derived imposing a sufficient long time interval over which the functional is decreasing.
Science
By determining the optimum interval over which to review standards facilitates the creation of new product markets.
where ntot(x) is the total number of burrows encountered in the depth interval over which Sh is determined.
Science
Reducing the length of the time interval over which the index is calculated implies the use of another proxy.
Science
First, the effective time interval over which standards should be reviewed differ as a function of the technological field in which the standard is used.
The temperature interval over which this process occurs is larger and at higher temperatures for the random copolymer compared with the two block copolymers.
Estrus was defined as a cow that stood to be mounted at least twice during the 50 h interval over which estrus was observed.
Science
The diagram in Figure 2 also includes WOMBAT but compares to GVKBIO and PubChem across an approximate 2-year interval over which the three-way overlap has increased.
Science
Expert writing Tips
Best practice
When describing a specific duration or length of time, using "interval over which" can provide clarity and precision, especially in scientific or technical writing. For example, "The experiment was conducted over an interval over which the temperature was carefully controlled."
Common error
Avoid using "interval over which" when referring to a single point in time. "Interval" implies a duration, so ensure your usage reflects a period, not an instant. For example, it would be incorrect to say "The measurement was taken during the interval over which the device malfunctioned" if the malfunction was instantaneous.
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "interval over which" functions as a prepositional phrase, typically modifying a noun or verb by specifying the time frame or duration during which an action or event takes place. Ludwig examples show its common usage in scientific and formal contexts.
Frequent in
Science
86%
News & Media
7%
Formal & Business
7%
Less common in
Academia
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, the phrase "interval over which" is a grammatically correct and frequently used prepositional phrase, particularly in scientific and formal writing. As affirmed by Ludwig, it serves to specify a duration or period during which an event occurs, ensuring clarity and precision. While it's most common in scientific contexts, its usage extends to news and formal communications. When aiming for simplicity in informal writing, consider alternatives like "time over which" or "duration over which". Remember to avoid using "interval over which" when referring to a single point in time, focusing instead on durations or periods.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
time over which
This alternative replaces "interval" with "time", emphasizing the duration aspect. This change maintains a high degree of interchangeability.
period over which
Substituting "interval" with "period" creates a phrase that is almost synonymous, highlighting a segment of time with specific characteristics.
duration over which
This phrase replaces "interval" with "duration", focusing on the length of time something lasts or continues.
timeframe over which
This alternative is slightly more specific, suggesting a defined period with start and end points.
span over which
Using "span" instead of "interval" emphasizes the extent or range covered.
lapse over which
This replacement indicates a temporary failure or decline during the stated time.
time lapse over which
This alternative explicitly mentions a passage of time, often implying a change or development.
range over which
This option broadens the meaning to include not just time, but any kind of continuum or scale.
gap over which
Replacing the term with "gap" indicates an interruption or a space in time.
timing over which
This alternative changes the meaning by focusing on the specific point or arrangement of events in time.
FAQs
How can I use "interval over which" in a sentence?
Use "interval over which" to describe a duration or period during which something occurs or is measured. For example, "The data was collected over an interval over which the system was stable."
What phrases are similar to "interval over which"?
Similar phrases include "time over which", "period over which", or "duration over which", all emphasizing a span of time.
Is it appropriate to use "interval over which" in informal writing?
While grammatically correct, "interval over which" is more common in formal or technical writing. In informal contexts, simpler phrases like "during the time that" or "while" may be more suitable.
What is the difference between "interval over which" and "point at which"?
"Interval over which" refers to a length of time, while "point at which" refers to a specific moment. For example, "the interval over which the experiment ran" vs "the point at which the experiment failed".
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
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested