Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
constitute mainly of
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "constitute mainly of" is not correct in English.
The correct form is "constitute mainly" or "be constituted mainly of." You can use it when describing the primary components or elements that make up something. Example: "The committee is constituted mainly of experts in environmental science."
⚠ May contain grammatical issues
Science
Alternative expressions(4)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
1 human-written examples
The emissions constitute mainly of hydrogen sulphide (H2S), methyl mercaptan (MM), dimethyl sulphide (DMS) and dimethyl disulphide (DMDS) in different proportions.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
59 human-written examples
They present a macromolecular structure constituted mainly of phenolic, guaiacyl, and siringyl units common to lignin.
Science
Activted sludge is a complex ecosystem constituted mainly of bacteria and protozoa.
Science
SEM and Raman analysis suggested that the char layers were constituted mainly of polyaromatic species with small and uniform microstructures at the surface.
Science
With positive electrode polarity, the alloyed layers constituted mainly of NiAl phase are formed on the EDA specimens, in either kerosene or distilled water.
For years now, biological wastewater treatment plants rely on activated sludge systems in which a complex ecosystem, constituted mainly of bacteria and protozoa, (bio degrade the incoming pollutants.
Science
One line (basic vasopressor principles) is constituted mainly of arginine vasotocin, which is present in all gnathostomes except mammals; amino-acid substitution in the molecule gave rise to the vasopressins of mammals.
Encyclopedias
Chemical composition analyses showed that extracted polysaccharide was a pectin-like polysaccharide with uronic acid content (47.5%) and neutral monosaccharides (52.5%) constituted mainly of arabinose, mannose, galactose, rhamnose, glucose and xylose in the molar percentage of 48.63%, 5.85%, 29.42%, 7.96%, 6.54% and 1.60%, respectively.
Science
Production networks, in particular the machinery ones, are constituted mainly of geographical agglomerations that form regional blocs of production.
If water is chemically defined as a liquid constituted mainly of H2O, then if a glass contains water, it contains mainly H2O.
Science
This was attributed to the fact that molasses is constituted mainly of sucrose [32] which does not have high calorific value as compared to wood char.
Expert writing Tips
Best practice
When describing the composition of something, use the correct phrase "constitute mainly" or "be constituted mainly of". For example: "The committee is constituted mainly of experts in environmental science."
Common error
Avoid using "constitute mainly of". The correct forms are "constitute mainly" or "be constituted mainly of". For example, instead of saying "The team constitutes mainly of senior members", say "The team is constituted mainly of senior members" or "The team constitutes mainly senior members".
Source & Trust
79%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "constitute mainly of" functions to describe the primary components or elements that make up a particular entity. However, this exact phrasing is grammatically incorrect. Ludwig AI suggests using "constitute mainly" or "be constituted mainly of" instead.
Frequent in
Science
100%
Less common in
News & Media
0%
Formal & Business
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, the phrase "constitute mainly of" is used to describe the primary components of something. However, Ludwig AI identifies this phrasing as grammatically incorrect. The correct forms are "constitute mainly" or "be constituted mainly of". While examples exist, mainly within scientific contexts, it's important to use the grammatically correct forms. Alternatives such as "consist mainly of" or "be composed mainly of" can also be used to express similar meanings with better grammatical accuracy.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
consist mainly of
Replaces "constitute" with "consist", maintaining a similar structure and meaning.
be composed mainly of
Uses a passive voice construction with "composed", emphasizing the components.
be primarily composed of
Adds "primarily" to further highlight the main components.
be largely made up of
Employs "made up" for a more informal tone while retaining the core meaning.
be chiefly comprised of
Utilizes "chiefly" to stress the main elements.
be fundamentally constituted of
Replaces mainly with fundamentally, and maintains similar structure
mainly comprise
Uses a direct structure with "comprise" as the verb.
be essentially formed of
Emphasizes the formation or creation aspect.
be principally composed of
Emphasizes the principal elements of the expression.
be predominantly made of
Uses "predominantly" to indicate a strong majority.
FAQs
What is the correct way to use "constitute" to indicate main components?
The phrase should be "constitute mainly" or "be constituted mainly of". For example, say "The group constitutes mainly volunteers" or "The group is constituted mainly of volunteers".
What are some alternatives to "constitute mainly of"?
Instead of "constitute mainly of", you can use phrases like "consist mainly of", "be composed mainly of", or "be largely made up of".
Is there a difference between "constitute mainly" and "be constituted mainly of"?
Both phrases are grammatically sound and convey a similar meaning. "Constitute mainly" is an active construction, while "be constituted mainly of" is a passive construction. Choose the one that fits best in your sentence.
How can I rephrase a sentence using "constitute mainly of" to make it clearer?
Rewrite the sentence using alternatives like "primarily comprise" or "are mainly composed of" for better clarity. For example, change "The solution constitutes mainly of water and salt" to "The solution primarily comprises water and salt" or "The solution is mainly composed of water and salt".
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
79%
Authority and reliability
2.8/5
Expert rating
Real-world application tested