which are composed of

USAGE SUMMARY

The phrase "which are composed of" is correct and usable in written English.
It can be used to describe the components or elements that make up a particular subject or object. Example: "The committee consists of several members, which are composed of experts in various fields."

✓ Grammatically correct

Science

Encyclopedias

News & Media

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

There are, however, numerous compound semiconductors, which are composed of two or more elements.

Encyclopedia Britannica

This shell consists of two subshells, which are composed of the single 2s orbital and the three 2p orbitals, respectively.

Encyclopedia Britannica

A major concern has been kidney stones (nephrolithiasis), the majority of which are composed of a calcium oxalate compound.

Encyclopedia Britannica

It's a reaction to standard lifestyle magazines which are composed of fancy things that we are supposed to want or aspire to.

The Guardian

For suppose it turned out that our world is infinitely complex: molecules are composed of atoms, which are composed of protons, neutrons, and electrons, which are composed of quarks, which are composed of strings, which are composed of … with no end.

SEP

Cell membranes, which are composed of fat, become solid like butter in a fridge.

BBC

He won for his work on superlattice crystals, which are composed of layered thin films.

Science Magazine

Theta band wavelet coefficients (cD4) which are composed of 506 samples were assumed as feature vectors.

Brain Informatics

In addition, ZnO nanowire exhibits nanocrystalline and nanoporous structures which are composed of interconnected nanowires.

Nanoscale Research Letters

Alliances are 'interorganisational networks' [31] which are composed of experts from diverse organizations.

Energy, Sustainability and Society

In the following section, we will consider multireceiver broadcast channels which are composed of independent subchannels.

EURASIP Journal on Wireless Communications and Networking

Expert writing Tips

Best practice

When describing the composition of something, ensure that the elements you list are indeed the primary or defining components. Be specific and avoid vague terms.

Common error

A common mistake is to use "composed of" when "comprising" is more appropriate. "Composed of" means 'made up of', while "comprising" means 'including' or 'containing'. For example, use 'The team comprises five members' instead of 'The team is composed of five members' if the five members are the totality of the team. You would use "composed of" if you were describing the materials the team members were made of (e.g. flesh and bone).

Linguistic Context

The phrase "which are composed of" functions as a relative clause, providing additional information about the noun it modifies. Ludwig examples show it connecting a description to the noun being discussed, elaborating on its components.

Expression frequency: Very common

Frequent in

Science

73%

Encyclopedias

5%

News & Media

5%

Less common in

Wiki

2%

Formal & Business

0%

Reference

0%

Ludwig's WRAP-UP

In summary, the phrase "which are composed of" is a versatile and grammatically sound relative clause used to describe the elements that constitute something. Ludwig AI confirms its validity. It's commonly found in scientific writing, encyclopedias, and news media, indicating its broad applicability across various registers. When using this phrase, ensure that the elements you list are indeed the primary components of the subject you're describing. Also, avoid misusing it interchangeably with "comprising", as they have distinct meanings. Alternative phrases include "which consist of" or "which are made up of".

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

which consist of

This alternative uses 'consist' instead of 'compose', implying a set of elements forming a whole.

which contain

A simple and direct way of saying that something includes specific elements.

which are made up of

This option replaces 'composed' with 'made up', conveying the same meaning but with a more informal tone.

which are comprised of

Uses 'comprised' instead of 'composed', suggesting inclusion or containment.

that are constituted by

A more formal way of saying "which are composed of", using 'constituted' to emphasize the formation or establishment of something.

that are formed from

Emphasizes the process of creation or formation using specific elements.

which include

This is a more general term that indicates some, but not necessarily all, of the components.

that incorporate

This suggests that something includes or contains certain elements as part of a larger structure.

which feature

Focuses on highlighting specific elements or aspects.

that embody

Implies that something represents or exemplifies certain elements or qualities.

FAQs

What's the difference between "which are composed of" and "which comprise"?

"Which are composed of" means 'made up of', focusing on the elements that form something. In contrast, "which comprise" means 'include' or 'contain', indicating what something consists of. The former emphasizes the components, while the latter emphasizes the whole.

What are some alternatives to "which are composed of"?

You can use alternatives like "which consist of", "which are made up of", or "which are comprised of", depending on the context and desired level of formality.

How can I use "which are composed of" in a sentence?

Use "which are composed of" to describe the elements that make up a particular subject or object. For example, "The alloy has several layers, which are composed of iron and carbon."

Is it correct to say "that are composed of" instead of "which are composed of"?

Yes, both "that are composed of" and "which are composed of" can be correct, but "which" is typically used for nonrestrictive clauses (adding extra information), while "that" is used for restrictive clauses (essential to the sentence's meaning). However, in many contexts, they are interchangeable.