under a pressure

USAGE SUMMARY

The phrase "under a pressure" is not correct in standard English; it should be "under pressure." You can use "under pressure" to describe a situation where someone is experiencing stress or demands that require them to perform or respond quickly.
Example: "She performed exceptionally well under pressure during the final exam."

⚠ May contain grammatical issues

Science

Academia

News & Media

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

Suppose the fluid accelerates to m /s in 10 ms under a pressure of 1 kPa.

Massachusetts Institute of Technology

Furthermore, the flow mechanism and characteristic under a pressure ratio were analysed in detail.

Applied Thermal Engineering

In the column, oleic acid is esterified with methanol under a pressure of 7 MPa.

Chemical Engineering and Processing: Process Intensification

Under a pressure as low as 0.01 atmosphere, equilibrium will be reached at 0.004 percent carbon and 0.006 percent oxygen.

Encyclopedia Britannica

Lamination was carried out under a pressure of 10 MPa with simultaneously heating at 400 °C.

Carbon

Thin membranes of this material, used for proportional counter windows operating under a pressure differential, have been tested for the effects of radiation damage on leak rate.

Harvard University

The teaching function in the university has been under a pressure of change in the recent years.

IFAC Proceedings Volumes

Due to business and environmental issues, industrial players are under a pressure to take back the product after its use.

IFAC-PapersOnLine

The microvalve flow rate (water) is measured to be 18 cm3/s under a pressure difference of 50 psi.

Sensors and Actuators A: Physical

The mean free path of an oxygen gas molecule under a pressure of 1 atmosphere at 0° C is about 6 × 10-6 cm (2 × 10−6 inch).

Britannica

The resulting powder was then pressed into pellets of 6.0 mm in diameter under a pressure of 1.4 metric tons for 1 2 min.

Nature

Expert writing Tips

Best practice

Always use the correct phrase "under pressure" when describing a state of being stressed or compelled by demands. It's a widely recognized and grammatically sound idiom.

Common error

Avoid using the non-standard phrase "under a pressure". The correct and accepted form is "under pressure", which refers to the general state of being burdened by demands or stress.

Linguistic Context

The phrase "under a pressure" functions as a prepositional phrase, intended to modify a verb or noun by indicating a condition or state. However, Ludwig AI indicates this is grammatically incorrect.

Expression frequency: Very common

Frequent in

Science

79%

Academia

10%

News & Media

5%

Less common in

Encyclopedias

3%

Wiki

3%

Formal & Business

0%

Ludwig's WRAP-UP

In summary, while the phrase "under a pressure" appears frequently across diverse sources, especially in scientific and academic writing, Ludwig AI identifies it as grammatically incorrect. The correct and widely accepted idiom is "under pressure". Therefore, it's best practice to avoid using "under a pressure" and instead opt for the standard form or other alternatives like "facing pressure" for clear and grammatically sound communication.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

under pressure

Changes "a pressure" to the more common and grammatically correct "pressure".

facing pressure

Replaces "under" with "facing", providing a clearer and more direct construction.

subject to pressure

Emphasizes the idea of being acted upon by pressure.

experiencing pressure

Highlights the act of undergoing pressure.

in a high-stress situation

Substitutes the entire phrase to focus on the resulting state of stress.

constrained by pressure

Focuses on how pressure limits or restricts actions.

feeling the strain

Uses a more figurative expression to describe the effects of pressure.

encountering demands

Shifts the focus from pressure to the specific demands being faced.

dealing with stress

Focuses on the coping aspect of handling pressure.

working in a demanding environment

Broadens the context to describe the overall work setting.

FAQs

What is the correct way to say "under a pressure"?

The correct and commonly accepted phrase is "under pressure". The inclusion of the article "a" is grammatically incorrect in this context.

Is "under a pressure" ever grammatically correct?

While "under a pressure" is technically grammatically incorrect as an idiom, it might be used in a literal, though uncommon, context, such as "the material was tested under a pressure of 100 psi". However, even in such cases, rephrasing to "at a pressure of 100 psi" or "under pressure of 100 psi" is preferable for clarity.

What can I say instead of "under a pressure"?

Use the correct idiom "under pressure". Depending on the context, you could also use phrases like "facing pressure" or "subject to pressure".

What's the difference between "under a pressure" and "under pressure"?

"Under a pressure" is grammatically incorrect and not standard English. The correct form is "under pressure", which means experiencing stress or demands.