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
prolonged interval
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "prolonged interval" is correct and usable in written English.
You can use it in any formal or informal context to refer to a period of time that lasts a long time and is extended beyond what is usual or expected. For example, "We had to wait a prolonged interval before we got any news of our missing loved one."
✓ Grammatically correct
Science
Alternative expressions(20)
extended period
lengthy duration
protracted timeframe
extended timeframe
considerable duration
significant lapse
extended delay
prolonged duration
prolonged time
prolonged pause
protracted interval
prolonged timeframe
length interval
lengthy interval
prolonged period
long-lasting period
extended duration
sustained timeframe
bigger period
longer duration
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
11 human-written examples
In conclusion, low hemoglobin, high serum lactic acid levels, prolonged interval from cardiac arrest to ECMO were independent predictors for poor neurological outcomes after successful ECPR.
Science
Despite this, 11 patients (14%) had disruptions in chemotherapy, 2 had premature termination of chemotherapy, and 9 had prolonged interval delays.
Science
We hypothesized that prolonged interval to delivery of cancer therapy negatively impacts survival.
Science
Achieving this currently requires a significant amount of non-targeted tissue frozen to >−40 °C for a prolonged interval.
Science
Conclusion Toxicological samples performed after a prolonged interval of time from the intoxication moment are often negative.
Science
In the present paper, we are analyzing two-point observations of the cusp magnetosheath boundary during a prolonged interval of dawnward pointing IMF.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
49 human-written examples
The cases which fall beyond the agreed cut off point would be best referred to as having prolonged intervals.
Science
It is therefore plausible that the excess risk of emergency diagnosis of women with bladder cancer reflects prolonged intervals to diagnosis after presentation.
Science
Studies show that about 50% of women with PCOS have prolonged intervals between their menstrual periods (this is known as oligomenorrhea).
Wiki
Although rarely acknowledged, RI is the workhorse needed to sustain gains from episodic mass immunization campaigns and to prolong intervals between those campaigns.
It is associated with electrocardiogram (ECG) abnormalities, including peaked T waves, shortened QT intervals, prolonged PR intervals, reduction in the amplitude of P waves, and 'sine-wave' ventricular rhythms with wide QRS complexes.
Science
Expert writing Tips
Best practice
When using "prolonged interval", ensure the context clearly indicates what is being prolonged, whether it's time between events, a waiting period, or a treatment phase.
Common error
Avoid using "prolonged interval" for short or insignificant durations. This phrase is best suited for situations where the length of the interval is notably long or problematic.
Source & Trust
77%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "prolonged interval" functions primarily as a noun phrase, where 'prolonged' modifies 'interval'. As supported by Ludwig, it describes a period of time that has been extended.
Frequent in
Science
100%
Less common in
News & Media
0%
Formal & Business
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, "prolonged interval" is a grammatically sound phrase used to describe an extended duration, as Ludwig AI confirms. While not overly common, it frequently appears in scientific and medical literature. When using this phrase, ensure that the context highlights the extended nature of the duration and consider alternatives such as ""extended period"" or ""lengthy duration"" for variety. Avoid using it for trivial or short durations to maintain accuracy. The examples provided showcase its typical application in describing timeframes and their effects in various studies.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
extended period
This alternative uses more general terms for time, but retains the sense of duration.
lengthy duration
This alternative emphasizes the length of time, similar to "prolonged interval".
protracted timeframe
This option uses a more formal term, "protracted", to convey a long-lasting duration.
long-lasting span
This phrase highlights the continuous nature of the interval.
extended timeframe
This is another way to emphasize the duration of the "interval".
considerable duration
Emphasizes the substantial length of the interval.
significant lapse
This alternative highlights the gap or pause between events.
extended delay
Focuses on the postponement caused by the "interval".
drawn-out period
This phrasing suggests the slowness and extended nature of the "interval".
lengthy space
Highlights the extended gap or space between occurrences.
FAQs
How can I use "prolonged interval" in a sentence?
You can use "prolonged interval" to describe an extended duration between events or actions. For example, "The study showed a correlation between a "prolonged interval" between diagnosis and treatment and poorer patient outcomes."
What are some alternatives to "prolonged interval"?
Alternatives to "prolonged interval" include "extended period", "lengthy duration", or "protracted timeframe". The best choice depends on the specific context.
Is "prolonged interval" formal or informal?
"Prolonged interval" is generally considered a neutral to formal phrase, suitable for academic, scientific, or professional contexts. Less formal alternatives might be preferable in casual conversation.
What does "prolonged interval" mean?
"Prolonged interval" refers to a period of time that is extended or longer than usual. It emphasizes the duration and suggests that the length of the interval is significant.
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
77%
Authority and reliability
4.1/5
Expert rating
Real-world application tested