mainly composed by

USAGE SUMMARY

The phrase "mainly composed by" is not correct in standard English; it should be "mainly composed of." You can use the corrected phrase when describing the primary components or elements that make up something.
Example: "The committee is mainly composed of experts in environmental science."

⚠ May contain grammatical issues

Science

Wiki

News & Media

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

The albums under the label are mainly composed by Key's signature composers: Jun Maeda, Shinji Orito and Magome Togoshi.

Wikipedia

Final Fantasy XII (2006) was mainly composed by Hitoshi Sakimoto, although six compositions were contributed by his fellow composers Hayato Matsuo and Masaharu Iwata.

Wikipedia

The music of Chrono Trigger was mainly composed by Yasunori Mitsuda, with a few tracks composed by regular Final Fantasy composer Nobuo Uematsu.

Wikipedia

Darger mainly composed by tracing directly from comic strips, coloring books, newspaper advertisements and magazine illustrations.

The New York Times - Arts

The HVDC system is mainly composed by voltage source converters (VSC-HVDC).

Ain Shams Engineering Journal

XPS analysis shows that particles are mainly composed by carbon and oxygen.

Journal of Aerosol Science

The thrust sheets are mainly composed by the Meso-Cenozoic sedimentary succession pertaining to the Apulian-Adriatic plate margin that is still westerly-subducting beneath the Apennines.

Nature

We found that the population was mainly composed by short-lived (6 10 months), small-medium individuals.

Estuarine, Coastal and Shelf Science

Postglacial vegetation was mainly composed by grasslands and shrubby communities with sparsely distributed Nothofagus trees under dry conditions.

Review of Palaeobotany and Palynology

The Stirling engine is mainly composed by five compartments: two working spaces and three heat exchangers (heater, cooler, and regenerator).

Comprehensive Energy Systems

The system is mainly composed by: PVT collectors, a single-stage LiBr H2O absorption chiller, storage tanks and auxiliary heaters.

Energy Conversion and Management

Expert writing Tips

Best practice

Use "mainly composed of" to ensure grammatical accuracy when describing the principal elements of something. For example: "The soil is mainly composed of sand and clay."

Common error

Avoid using "mainly composed by". The correct preposition to use is "of". Using "by" suggests agency rather than composition, leading to grammatical errors and confusion.

Linguistic Context

The phrase "mainly composed by" functions as a descriptive phrase aiming to specify the primary constituents of a subject. As Ludwig AI indicates, this phrase is not grammatically correct, and the proper construction is "mainly composed of."

Expression frequency: Very common

Frequent in

Science

79%

Wiki

8%

News & Media

3%

Less common in

Formal & Business

3%

Encyclopedias

0%

Social Media

0%

Ludwig's WRAP-UP

In summary, while the phrase "mainly composed by" is frequently encountered, especially in scientific and technical writing, it is grammatically incorrect. The correct form is "mainly composed of". Ludwig AI confirms this, advising the use of "of" to properly denote composition. Consider alternatives like "primarily made up of" or "largely consisting of" for improved accuracy. Despite its prevalence, adhering to correct grammatical standards will enhance clarity and credibility in writing.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

mostly composed of

A direct synonym for "mainly composed of", using "mostly" instead of "mainly".

primarily made up of

Emphasizes the components that constitute something, similar to "mainly composed of", but uses different wording.

primarily constituted by

Similar to "primarily made up of", but using "constituted by" instead of "made up of".

largely consisting of

Focuses on the elements that something primarily consists of, providing a slightly different perspective on composition.

largely made up by

Similar to "largely consisting of", but using "made up by" instead of "consisting of".

chiefly constituted of

A more formal way of saying "mainly composed of", highlighting the main elements that constitute something.

predominantly comprised of

Indicates that something is mostly formed from specified elements, emphasizing the dominant components.

chiefly made up of

A direct synonym for "chiefly constituted of", emphasizing the main elements that constitute something.

principally formed of

Highlights the main elements that form something, offering a slightly more formal alternative.

essentially consisting of

Focuses on the fundamental elements that something consists of, emphasizing the core components.

FAQs

What is the correct way to say "mainly composed by"?

The correct phrase is "mainly composed of". The preposition "of" indicates that something is made up of certain elements.

Is "mainly composed by" grammatically correct?

No, "mainly composed by" is grammatically incorrect. The correct phrasing is "mainly composed of."

What can I use instead of "mainly composed by" to describe the components of something?

You can use phrases like "primarily made up of", "largely consisting of", or "mostly composed of".

What is the difference between "mainly composed by" and "mainly composed of"?

"Mainly composed by" is grammatically incorrect, while "mainly composed of" is the correct phrase. "Of" indicates composition, whereas "by" typically indicates agency.