a defined duration

USAGE SUMMARY

The phrase "a defined duration" is correct and usable in written English.
It can be used when specifying a particular time frame or period for an event or activity. Example: "The project will be completed within a defined duration of six months."

✓ Grammatically correct

Science

News & Media

Human-verified examples from authoritative sources

Exact Expressions

7 human-written examples

Generally, such programs have a defined duration: one year, two years, four years, etc. Competency-based education does away with the defined duration and credit hours, replacing time with mastery.

Huffington Post

Released HSV-2 survives in the genital tract for a defined duration (1/ c), during which time it can transfer from neurons and infect local epithelial cells.

eLife

There is a continuous exposure to a fixed concentration of the agent for a defined duration (e.g., 24 h) in an ex vivo model, whereas a gradient of concentration in the dynamic in vitro model.

BMC Veterinary Research

Chemical denaturant titrations involve 30 50 samples (typically with volumes of 0.2 1.0 ml) being sequentially loaded by hand into cuvettes and thereafter thermostated for a defined duration before making measurements.

Biochimica et Biophysica Acta - General Subjects

Currently the optimal duration of treatment remains uncertain, but there does not appear to be clearly detrimental effect to stop treatment after a defined duration of at least 6 months.

British Journal of Cancer

There is currently no detrimental survival effect for treatment for a defined duration (at least 6 months) followed by a treatment break compared with continuous treatment until disease progression.

British Journal of Cancer

Human-verified similar examples from authoritative sources

Similar Expressions

52 human-written examples

A continuous visual fixation (no saccades) of a randomly defined duration of 2 2.5 s was immediately followed by the delivery of a juice reward using a gravity-fed dispenser.

eLife

Moreover, the a priori defined duration of effect criteria was based on subject assessment of the waning of treatment effect.

BMJ Open

In addition, for hypothesis-generating purposes, 24 hours was an empirically defined duration for the time-to-treatment analyses for purposes of simple tabular presentation.

Critical Care

If the couple had a previous pregnancy that had not resulted in a live birth, we defined duration of subfertility as the time from the first day of the pregnancy to the time of start of treatment.

British Medical Journal

In the virtual human controller, the behavior was executed during the defined duration of each action.

EURASIP Journal on Wireless Communications and Networking

Expert writing Tips

Best practice

When describing projects or treatments, use "a defined duration" to clearly communicate the intended length, minimizing ambiguity. It sets clear expectations for those involved.

Common error

Avoid using "a defined duration" when the time period is variable or subject to change. Use more flexible language such as "an estimated duration" or "a typical duration" to reflect uncertainty.

Linguistic Context

The phrase "a defined duration" primarily functions as an adjectival phrase modifying a noun. As Ludwig AI confirms, it specifies a time period that has been predetermined or set. This phrase is typically used to provide clarity and precision in descriptions.

Expression frequency: Uncommon

Frequent in

Science

60%

News & Media

20%

Formal & Business

10%

Less common in

Encyclopedias

3%

Wiki

3%

Reference

2%

Ludwig's WRAP-UP

In summary, "a defined duration" is a grammatically correct and usable phrase that serves to specify a particular timeframe for an event or activity. As Ludwig AI has shown, this phrase appears most frequently in scientific and news contexts, indicating its utility in providing precise information. When writing, consider alternatives like "a specific timeframe" or "a set period of time" to enhance clarity. Remember that this phrase is best used when the duration is indeed fixed, and more flexible language should be employed when uncertainty exists. When precise time is needed in a sentence, "a defined duration" should be added to ensure clarity.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

a specific timeframe

Emphasizes the particularity of the time period.

a set period of time

Highlights the fixed nature of the duration.

a predetermined length

Focuses on the pre-planned aspect of the duration.

an established timeframe

Suggests the timeframe is already known or agreed upon.

a limited time span

Indicates that the duration is not extensive.

a fixed interval

Emphasizes the consistent and unchanging nature of the duration.

a prescribed period

Highlights that the duration is officially or authoritatively set.

a stipulated time

Implies that the duration is a requirement or condition.

a charted course

This alternative implies that the duration is a part of a plan.

a planned duration

This alternative means that the duration was included in a larger plan.

FAQs

How can I use "a defined duration" in a sentence?

You can use "a defined duration" to specify the length of an event, project, or treatment. For example: "The study had "a defined duration" of six months."

What are some alternatives to "a defined duration"?

Alternatives include "a specific timeframe", "a set period of time", or "a predetermined length". The best choice depends on the specific context.

When is it appropriate to use "a defined duration"?

It's appropriate when you want to emphasize that a time period is fixed and pre-established, such as in a scientific experiment or a project plan. Avoid it if the duration is flexible or uncertain.

Is "a defined duration" formal or informal?

"A defined duration" is suitable for both formal and neutral contexts. It is clear and professional, making it appropriate for reports, articles, and other types of content.