a expansion of

USAGE SUMMARY

The phrase "a expansion of" is not correct; it should be "an expansion of." You can use it when referring to the act of making something larger or more comprehensive, typically in a context of ideas, projects, or concepts.
Example: "The report includes an expansion of the previous findings, providing more detailed analysis and insights."

⚠ May contain grammatical issues

Science

Wiki

News & Media

Human-verified examples from authoritative sources

Exact Expressions

7 human-written examples

(A) Expansion of T cells generated using CD3/CD28 Dynabead (Beads) and OKT3-28BB RNA electroporation (RNA-T).

Protein & Cell

The works were followed in March 2006 by a expansion of Terminal 2, and the construction of an additional level of airline lounges above the terminal.

Wikipedia

Total area was, including for the congress center, for the four-story hotel, and a expansion of the shopping center by.

Wikipedia

It was 23 years ago that Pat Buchanan called for a expansion of the cultural cold war at the Republican National Convention, and that war has now become hot in Indiana.

Huffington Post

(A ) Expansion of the peripheral olfactory code in this study: large increase in numbers of identified activators and inhibitors.

eLife

(A ) Expansion of a 1H-N TROSY-HSQC spectrum of free 2H,N-labeled synaptobrevin SNARE motif (2H,N-Syb).

eLife

Human-verified similar examples from authoritative sources

Similar Expressions

47 human-written examples

Once Upon a River is an expansion of that effort.

The New York Times

He supported an expansion of a federally financed health insurance program for children.

The New York Times

So the immediate effect of these trips was an expansion of a war.

The New Yorker

In exchange for that adjustment, Democrats got an expansion of a low-income housing credit.

Huffington Post

But is the storage and sharing of images a compression or an expansion of experience?

Vice

Expert writing Tips

Best practice

Always use "an" instead of "a" before words that begin with a vowel sound. Remember that the indefinite article must agree with the sound, not the letter, that follows it.

Common error

The most common mistake is using "a" instead of "an" before words starting with a vowel sound. Review the rules for indefinite articles to avoid this error.

Linguistic Context

The phrase functions as a noun phrase, typically acting as the subject or object of a sentence. While grammatically incorrect, Ludwig identifies examples where it's used to refer to the act or process of something becoming larger or more extensive.

Expression frequency: Rare

Frequent in

News & Media

37%

Science

33%

Wiki

25%

Less common in

Formal & Business

5%

Academia

0%

Reference

0%

Ludwig's WRAP-UP

The query "a expansion of" is grammatically incorrect; the correct form is "an expansion of". This phrase functions as a noun phrase and is used to describe something becoming larger or more extensive. While examples can be found across various contexts, including news, science, and wiki sources, Ludwig advises using the correct grammatical form. Alternatives include "an increase in" and "a growth of". Remember to use "an" before words that begin with a vowel sound.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

an increase in

Replaces "expansion" with a more common synonym and corrects the article.

a growth of

Substitutes "expansion" with "growth", a closely related term, while maintaining a similar structure.

an extension to

Uses "extension" as an alternative to "expansion", indicating a broadening or lengthening.

the broadening of

Employs "broadening" to convey the idea of widening the scope or range.

the enlargement of

Replaces "expansion" with "enlargement", emphasizing an increase in size or scale.

a development in

Uses "development" to suggest a more complex and gradual process of expansion.

the escalation of

Implies a rapid or intensified increase, often in a negative context.

the augmentation of

Uses a more formal term, "augmentation", to indicate an increase or enhancement.

a proliferation of

Suggests a rapid and widespread increase, often in numbers.

the amplification of

Conveys the idea of making something louder, stronger, or more intense.

FAQs

What is the correct way to say "a expansion of"?

The grammatically correct way to express this phrase is "an expansion of". The indefinite article "an" should be used before words that begin with a vowel sound.

When should I use "an" instead of "a"?

Use "an" before words that start with a vowel sound (a, e, i, o, u). For example, say "an apple", "an egg", "an idea", "an orange", and "an umbrella".

What are some alternatives to the phrase "an expansion of"?

Depending on the context, you could use alternatives like "an increase in", "a growth of", or "an extension to".

Is it ever correct to say "a expansion of"?

No, it is not grammatically correct to say "a expansion of". The correct form is "an expansion of", as "expansion" begins with a vowel sound and requires the article "an".