drag index

USAGE SUMMARY

'drag index' is not a correct part of sentence in written English.
Instead, you could use the phrase 'drag coefficient'. For example, "The drag coefficient of this car is significantly higher than the competition."

⚠ May contain grammatical issues

Science

News & Media

Human-verified examples from authoritative sources

Exact Expressions

1 human-written examples

Young male swimmers have a higher speed fluctuation, active drag, power needed to overcome and technique drag index than young female swimmers [ 40].

BMC Sports Science, Medicine and Rehabilitation

Human-verified similar examples from authoritative sources

Similar Expressions

57 human-written examples

This function has been used in hydrodynamics-based metabolic studies to evaluate important parameters of energetic costs, such as the standard metabolic rate and the drag power indices.

Plosone

In particular, the first-degree power-law polynomial function is frequently used to describe activity metabolism for steady swimming animals to evaluate important parameters of energetic costs, such as the standard metabolic rate and the drag power indices [5], [8] [10].

Plosone

As a result, the metabolic-to-drag power conversion index is always greater (never less) than 1.

Plosone

John nodded and dragged an index finger across his throat.

The New York Times - Magazine

"The audience is going to be sobbing," he said, dragging his index fingers down his cheeks.

The New York Times - Arts

The rise of the Faangs helped propel stock markets to new highs and their stumble helped to drag down indices across the world last year.

The Guardian - Tech

But when the technology sector crumbled, the 30 technology stocks that had been added in the spring just dragged the index down.

The New York Times

Dropping energy and gas prices dragged the index lower.

Forbes

Appleshares dropped 1.8% and were the biggest drag on indexes as the iPhone maker unveiled its long-awaited video streaming service.

BBC

A global equity sell-off on Feb. 27 dragged the index down 50 points, or 3.5%–its largest daily decline since March 2003.

Forbes

Expert writing Tips

Best practice

When describing resistance in fluid dynamics or aerodynamics, use the term "drag coefficient" instead of "drag index" for better clarity and acceptance in scientific contexts.

Common error

Avoid using "drag index" in technical writing; instead, utilize "drag coefficient" or other well-defined terms to prevent confusion and maintain credibility.

Linguistic Context

The phrase "drag index" functions as a noun phrase, aiming to identify or categorize a specific measurement related to drag. However, Ludwig AI indicates that it is not a standard or correct phrase in written English.

Expression frequency: Rare

Frequent in

Science

40%

News & Media

30%

Formal & Business

10%

Less common in

Academia

5%

Encyclopedias

5%

Wiki

5%

Ludwig's WRAP-UP

In summary, while the term "drag index" might intuitively seem to refer to a measure of drag, Ludwig AI identifies it as not a standard or grammatically correct phrase in English. The preferred and technically accurate term is "drag coefficient". Though occasionally found in varied sources like science articles and news reports, its use is discouraged in formal or scientific writing. Relying on established terminology ensures clarity and credibility in technical discussions. The frequency of "drag index" is rare, further suggesting its limited acceptance and usage.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

drag coefficient

Replaces "index" with a more technical term related to fluid dynamics and aerodynamics. More precise and commonly accepted in scientific contexts.

index of drag

Reorders the words while retaining the core meaning, providing a slightly more formal tone. Minimal semantic change.

resistance index

Offers a synonym for "drag", focusing on the opposition to movement. Changes the specific property being measured.

drag factor

Substitutes "index" with "factor", indicating a multiplier that influences drag. Implies a proportional relationship.

measure of drag

Replaces "index" with "measure", emphasizing the quantification process. A more general way to refer to the assessment of drag.

drag ratio

Replaces "index" with "ratio", implying a comparison between two related quantities involving drag. Changes the quantitative nature.

metric for drag

Substitutes "index" with "metric", emphasizing a measurement system for drag. Highlights the evaluative aspect.

level of drag

Focuses on the degree or intensity of drag, rather than a specific index. Broadens the focus to general quantification.

indicator of drag

Changes "index" to "indicator", suggesting a sign or signal of drag. Shifts the focus to detection and indication.

computed drag

Focuses on the calculated value of drag, rather than an index. Changes the focus from an index to a resultant value.

FAQs

What is a more appropriate term than "drag index"?

A more appropriate and commonly used term is "drag coefficient", which is a dimensionless quantity that represents the object's resistance to motion in a fluid.

How does "drag coefficient" differ from "drag index"?

"Drag coefficient" is a standardized measure used in physics and engineering, while "drag index" is not a recognized or well-defined term.

In what contexts might the term "drag index" appear?

Although not standard, "drag index" might be used informally to refer to a general measure or indicator of drag in specific, non-technical contexts. However, it's best to avoid this term in formal writing.

Could "resistance index" be a suitable alternative to "drag index"?

While "resistance index" is a valid term, it's more general and may not specifically refer to drag. It depends on whether you intend to convey resistance to motion in a fluid or a broader sense of opposition.