a defined quantity of

USAGE SUMMARY

The phrase "a defined quantity of" is correct and usable in written English.
It can be used when specifying a particular amount or measurement of something, often in scientific or technical contexts. Example: "In the experiment, we used a defined quantity of the chemical to ensure accurate results."

✓ Grammatically correct

Science

Human-verified examples from authoritative sources

Exact Expressions

7 human-written examples

When all the four solutions were equilibrated with crushed core, a defined quantity of base 0.1 M NaOH (5 mL) was added to all these flasks.

Journal of Petroleum Exploration and Production Technology

Generally, vermicompost elutriate (vermicompost tea) is produced by placing a defined quantity of vermicompost into water and shaking it for a defined period of time.

International Journal of Recycling of Organic Waste in Agriculture

A stable isotope dilution (SID) method is applied as an internal standard by the use of a defined quantity of spiked stable isotope- labeled peptide of the same sequence in a pre-defined quantity.

Clinical and Translational Medicine

The oral cookie test with a defined quantity of fat per body surface area may be a reliable method for detecting postprandial metabolic disturbances.

Cardiovascular Diabetology

After incubation, 800 μl of H/H buffer pH 7.4 plus 100 μl containing a defined quantity of TruCOUNT™ beads (BD Biosciences, San Jose, CA) was added to each sample tube prior to analysis by flow cytometer.

Biology of Sex Differences

4 A researcher uses a probe to emit a defined quantity of light to the face in three defined wavelengths, and a receiver measures the light the skin reflects and absorbs.

Clinical, Cosmetic and Investigational Dermatology

Human-verified similar examples from authoritative sources

Similar Expressions

53 human-written examples

Most notably, a number of current healthcare reform proposals include legislation that would mandate that NFP hospitals provide an explicitly defined quantity of charity care (e.g., 5% of total revenue) or risk losing their tax exempt status [ 24, 25].

BMC Health Services Research

These findings do not overlap with those that emerge when subcortical dementia is studied as an independent clinical entity characterized by defined quantities of leuakariosis.

Clinical interventions in aging

Microfluidic methods have high potential to provide single cells with defined quantities of diffusive signals and a confined environment akin to that of plant cells in vivo, however, microfluidic devices at present do not integrate 3D tissue-structures (scaffolds) in the confined environment to better mimic native tissue conditions.

BMC Plant Biology

Well defined quantities of poly vinyl pyrrolidone) (PVP) solutions are dispensed into microcontainers by inkjet printing with a quasi-no-waste performance.

Journal of Controlled Release

The ability to induce adsorbent regeneration and to desorb defined quantities of the adsorbate was confirmed by gravimetric measurements and by on-line monitoring of the desorption process by fibre optic temperature measurement.

Chemical Engineering Science

Expert writing Tips

Best practice

When using "a defined quantity of", ensure that the context clearly indicates how the quantity is defined (e.g., through measurement, calculation, or specification).

Common error

Avoid using "a defined quantity of" without providing the specific definition or method of determination. Ensure the quantity is clearly understood by the reader.

Linguistic Context

The phrase "a defined quantity of" functions as a determiner phrase that modifies a noun, specifying that the noun is present in a particular, predetermined amount. Ludwig confirms its grammatical correctness and usability.

Expression frequency: Uncommon

Frequent in

Science

85%

News & Media

6%

Encyclopedias

3%

Less common in

Formal & Business

2%

Wiki

2%

Reference

0%

Ludwig's WRAP-UP

In summary, the phrase "a defined quantity of" is a grammatically sound and usable expression, primarily found in scientific and technical contexts. As Ludwig confirms, it serves to specify a particular amount with precision. While not overly common, it is appropriate when accuracy is essential. Alternatives such as "a specified quantity of" or "a precise amount of" can be used to convey a similar meaning. When using the phrase, ensure that the definition of the quantity is clear to avoid vagueness.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

a specified quantity of

Changes "defined" to "specified", emphasizing that the quantity has been explicitly stated.

a precise amount of

Replaces "quantity" with "amount" and "defined" with "precise", focusing on accuracy.

a fixed quantity of

Substitutes "defined" with "fixed", highlighting that the quantity is unchangeable.

a determined quantity of

Uses "determined" instead of "defined", suggesting that the quantity has been established through calculation or measurement.

a known quantity of

Replaces "defined" with "known", emphasizing that the quantity is already established or recognized.

a particular quantity of

Uses "particular" to specify a certain quantity among others.

a set quantity of

Changes "defined" to "set", highlighting that the quantity is predetermined.

a measured quantity of

Replaces "defined" with "measured", emphasizing that the quantity has been obtained through measurement.

a specific quantity of

Substitutes "defined" with "specific", indicating a clear and unambiguous quantity.

a given quantity of

Changes "defined" to "given", highlighting that the quantity is already established or provided.

FAQs

How can I use "a defined quantity of" in a sentence?

Use "a defined quantity of" to specify a particular amount or measurement of something, especially in scientific or technical contexts. For example, "The experiment required "a defined quantity of" acid."

What can I say instead of "a defined quantity of"?

You can use alternatives like "a specific amount of", "a precise quantity of", or "a fixed quantity of" depending on the context.

Is it correct to say "a defined amount of" instead of "a defined quantity of"?

Yes, "a defined amount of" is a suitable alternative. "Amount" is often used for uncountable nouns, while "quantity" can be used for both countable and uncountable nouns, but in many contexts, they are interchangeable.

What's the difference between "a defined quantity of" and "a specific quantity of"?

"A defined quantity of" implies that the quantity has been determined or established, while "a specific quantity of" simply means a particular amount is being referred to. They are often used interchangeably.