decreased fourfold

USAGE SUMMARY

The phrase "decreased fourfold" is correct and commonly used in written English.
It means that something has decreased by a factor of four, or four times. It is often used to describe a significant decrease in quantity or amount. Example: The company's profits decreased fourfold in the last quarter due to the pandemic. Another example: The population of the endangered species has decreased fourfold in the past decade, leading to concerns about their survival.

✓ Grammatically correct

Science

Human-verified examples from authoritative sources

Exact Expressions

3 human-written examples

During the past 100 years, India's per capita water availability has decreased fourfold whereas for Kerala, it has decreased fivefold (Basak 1992).

Applied Water Science

The depth of the data is decreased fourfold at each level of operation, i.e., first-level data depth is decreased from N2 to N2/4, second level to N2/16, and so on.

EURASIP Journal on Image and Video Processing

Concomitantly, CL decreased fourfold in parallel with increasing pulmonary edema beyond 30 minutes.

Critical Care

Human-verified similar examples from authoritative sources

Similar Expressions

57 human-written examples

At a flow rate of 1,000 μL/min, the voltage decreased by fourfold, from 0.057 mV (type 2) to 0.013 mV (type 4).

Nanoscale Research Letters

The pore sizes in the walls were decreased by fourfold to fivefold impregnation with a concentrated solution of AlONO3 2H2O, dried, and then calcined at 800 °C.

Nanoscale Research Letters

Results: Although the number of antral motor contractions remained relatively constant throughout the study, duodenal motor contractions decreased nearly fourfold after the instillation of mydriatics versus that seen before (P <.01).

The Journal of Pediatrics

The fact that bacterial biomass was relatively stable in the absence of A. bisporus, while it decreased about fourfold in the 26-day-period in the presence of A. bisporus supports the hypothesis that this mushroom forming fungus feeds on bacteria.

AMB Express

Although it gradually decreased approximately fourfold during development, it still remained high (~400 copies/cell) in the adult (Fig.  1d).

Brain Structure and Function

It should be noted that although a high suPAR level at inclusion was still significantly associated with an increased risk of mortality post-ART initiation, the HR post-ART decreased almost fourfold in the highest suPAR quartile (table 3).

BMJ Open

and complex mechanisms for regulating dietary iron absorption and distribution; and (vi) the negative acute phase response, in which plasma iron levels can be decreased by fourfold or more within hours of an infection has long been hypothesized to be an element of the innate immune system.

EMBO Molecular Medicine

We find that the mean peroxisome abundance decreases by fourfold in vps1Δ cells, while the peroxisome abundance distribution Fano factor is reduced threefold.

eLife

Expert writing Tips

Best practice

When using "decreased fourfold", ensure the context clearly indicates what is being measured and over what period the decrease occurred. Be specific with units and timeframes for clarity.

Common error

Avoid assuming that a "fourfold" decrease automatically implies a complete disappearance or zero value. Ensure your audience understands that the final value is a quarter (25%) of the original.

Linguistic Context

The phrase "decreased fourfold" functions as an adverbial modifier, specifying the extent of the decrease. It modifies a verb, indicating the magnitude of reduction (a factor of four). As Ludwig AI explained, the phrase is correct and commonly used.

Expression frequency: Very common

Frequent in

Science

100%

Less common in

News & Media

0%

Formal & Business

0%

Encyclopedias

0%

Ludwig's WRAP-UP

The phrase "decreased fourfold" is a grammatically sound and frequently employed expression, particularly in scientific contexts, as Ludwig AI explained. It serves to precisely quantify a substantial reduction, indicating that a value has diminished to one-quarter of its original amount. While predominantly found in formal and scientific registers, ensuring clarity in context and awareness of potential misinterpretations are essential for effective communication. Alternatives like "reduction by a factor of four" or "declined by 75 percent" may enhance understanding in broader audiences. Using "decreased fourfold" effectively means providing specific units, timeframes and avoiding the assumption of complete elimination.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

reduction by a factor of four

This alternative provides a more formal and explicit description of the decrease, replacing "fourfold" with a more descriptive phrase.

declined by 75 percent

This phrase converts the fourfold decrease into a percentage, offering a different way to express the proportional change.

contracted by a factor of four

Replacing "decreased" with "contracted" provides a slightly different nuance, suggesting a shrinking or compression.

quadrupled reduction

This phrase uses a different quantifier ("quadrupled") to emphasize the magnitude of the reduction, altering the focus from decrease to the extent of reduction.

was quartered

This uses a passive construction to indicate that something was divided into four parts, effectively decreasing to one-fourth of its original size.

scaled down by four times

This option emphasizes the action of scaling down, providing a slightly more active perspective on the reduction.

halved twice

This describes the decrease as two consecutive halvings, offering a more process-oriented view of the reduction.

shrank to a quarter

This alternative expresses the decrease by focusing on the resulting fraction, indicating that the original quantity is now one-fourth of its previous size.

suffered a fourfold loss

This emphasizes the negative impact or consequence of the decrease, framing it as a loss.

plummeted to 25% of its original value

This emphasizes a rapid and substantial decrease, adding a sense of suddenness that "decreased fourfold" may not convey.

FAQs

How can I use "decreased fourfold" in a sentence?

You can use "decreased fourfold" to describe a substantial reduction. For example, "After the policy change, the number of complaints "decreased fourfold"."

What's a simpler way to say "decreased fourfold"?

Simpler alternatives include phrases like "reduced by 75 percent" or "dropped to a quarter of its original value". These alternatives may be easier for some audiences to grasp quickly.

Is it more accurate to say "decreased fourfold" or "decreased by four times"?

"Decreased fourfold" is generally preferred for conciseness and clarity. Saying "decreased by four times" can sometimes be misinterpreted. Using expressions like "reduction by a factor of four" can be more precise.

What's the difference between "decreased fourfold" and "increased fourfold"?

"Decreased fourfold" means something became a quarter of its original size. In contrast, "increased fourfold" means it became four times larger than its original size.