key function

USAGE SUMMARY

The phrase "key function" is correct and usable in written English.
It can be used to describe an essential or primary role that something plays in a particular context or system. Example: "The key function of this software is to streamline communication between team members."

✓ Grammatically correct

Science

News & Media

Academia

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

So here's a key function.

Massachusetts Institute of Technology

Social connection is a key function of our brains.

The Washington Post

Rulemaking is a key function of the Commission.

Columbia University

Another key function of companies is to lower transaction costs.

Massachusetts Institute of Technology

The key function of the building appears to be the lockdown.

The Guardian

Some even argue that prediction is the key function of the brain1.

Nature

Mackiewicz, M. et al. Macromolecule biosynthesis: a key function of sleep.

Nature

The argument to the :key function is an element of either list-1 or list-2; the :key function typically returns part of the supplied element.

Massachusetts Institute of Technology

The key function typically returns part of the element of sequence.

Massachusetts Institute of Technology

He predicts that Serval's key function will be better access for mobile devices.

Princeton University

Although that is still a key function, many employers are expanding the clinics' role to include primary health-care services.

The Washington Post

Expert writing Tips

Best practice

When using "key function", ensure the context clearly indicates what performs the function and its impact. For example, 'The key function of mitochondria is energy production' is clearer than 'Energy production is a key function'.

Common error

Avoid using "key function" as a vague intensifier. Instead of saying 'Communication is a key function', specify whose communication and its purpose. For example, 'A key function of the project manager is to ensure clear communication between team members'.

Linguistic Context

The phrase "key function" primarily functions as a noun phrase that identifies or describes an essential or important purpose or role. It is often used to specify the fundamental responsibilities, tasks, or operations of an entity or process as Ludwig explains.

Expression frequency: Very common

Frequent in

Science

38%

News & Media

30%

Academia

15%

Less common in

Formal & Business

8%

Social Media

0%

Wiki

0%

Ludwig's WRAP-UP

In summary, "key function" is a commonly used noun phrase signifying an essential role or purpose, as confirmed by Ludwig. It's grammatically correct and appears frequently across scientific, news, academic, and formal business contexts. While versatile, it should be used with clear context to avoid vagueness. Consider alternatives like "essential role" or "primary purpose" for nuanced meaning. The phrase is characterized by a neutral-to-formal register, fitting both objective reporting and professional discourse.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

essential role

Focuses on the necessity of the function.

primary role

Highlights the main or foremost aspect of the function.

core responsibility

Emphasizes the fundamental duty or obligation.

fundamental task

Highlights the basic and necessary nature of the task.

main purpose

Stresses the primary intention or objective.

central aspect

Focuses on the importance and centrality of the function.

critical component

Highlights that the function is vital and indispensable.

chief aim

Emphasizes the principal goal or target.

principal duty

Stresses the main obligation or responsibility.

major undertaking

Focuses on the significant task or project involved.

FAQs

How can I use "key function" in a sentence?

You can use "key function" to describe an essential role or purpose something fulfills. For example, "A "key function" of the heart is to pump blood throughout the body."

What are some alternatives to "key function"?

Some alternatives include "essential role", "primary purpose", or "main task", depending on the context.

Is there a difference between "key function" and "primary function"?

While similar, "key function" emphasizes importance, whereas "primary function" highlights the main or most important function. The choice depends on the specific nuance you want to convey.

What is a common mistake when using "key function"?

A common mistake is using "key function" in a vague or unclear way. Ensure you clearly specify what performs the function and its significance. Avoid statements like "Management is a key function" without further context.