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
class of molecules
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "class of molecules" is correct and usable in written English.
It can be used in scientific contexts to refer to a group of molecules that share similar characteristics or properties. Example: "The class of molecules known as lipids plays a crucial role in cellular structure and function."
✓ Grammatically correct
Science
Academia
News & Media
Alternative expressions(3)
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
60 human-written examples
Fullerenes are a class of molecules composed entirely of carbon.
Tumour suppressor genes encode a broad class of molecules whose mutational attenuation contributes to malignant progression.
Science & Research
Also, goji berries contain antioxidants, vitamins, folate, fiber, minerals, and a class of molecules called phenolics.
Academia
"Aqueous soluble ferrocenes represent a whole new class of molecules for flow batteries," said Aziz.
Academia
"The sample preparation method can be applied to a broad class of molecules," say Longchamp and friends.
News & Media
In some cases this class of molecules are responsible for the pigmentation of given moulds and sponges41.
Science & Research
Carotenoids represent a class of molecules valuable for food, chemical and pharmaceutical industries.
Science
Heterocycle-containing macrocycles are an emerging class of molecules that have therapeutic efficacy.
Science
Many biologically active natural products that have interesting biological properties fall into this class of molecules.
Science
Flavonols are plant polyphenolic compounds that belong to the class of molecules collectively known as flavonoids.
Science
Calcilytics are a new class of molecules designed to exploit this mechanism.
Science
Expert writing Tips
Best practice
When writing about scientific topics, using the phrase "class of molecules" helps categorize and define complex chemical structures or compounds for clarity.
Common error
Avoid using "class of molecules" when referring to single, specific molecules. This phrase is meant for broader categories, not individual entities.
Source & Trust
86%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "class of molecules" functions as a noun phrase, typically acting as a subject or object in a sentence. It identifies a group of molecules sharing common characteristics, as seen in Ludwig's examples.
Frequent in
Science
60%
Academia
20%
News & Media
10%
Less common in
Formal & Business
5%
Wiki
3%
Encyclopedias
2%
Ludwig's WRAP-UP
The phrase "class of molecules" is a common and correct expression used to categorize molecules with shared characteristics, confirmed by Ludwig AI. Predominantly found in scientific and academic contexts, it serves to classify and organize diverse molecular types. Alternatives include "category of molecules" and "group of molecules", offering slight variations in emphasis. When using the phrase, ensure it refers to a broad group rather than a single molecule to maintain accuracy. Understanding its usage helps in conveying scientific information clearly and precisely.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
category of molecules
Replaces "class" with "category", emphasizing a grouping by type.
group of molecules
Substitutes "class" with "group", indicating a collection of molecules.
type of molecules
Uses "type" instead of "class", highlighting a specific kind of molecule.
family of molecules
Employs "family" to suggest a group of molecules with related structures or functions.
collection of molecules
Replaces "class" with "collection", emphasizing a set of molecules gathered together.
set of molecules
Uses "set" to indicate a defined group of molecules.
molecular class
Inverts the order of words but retains the core meaning.
molecular category
Combines "molecular" with "category" for emphasis.
molecular group
Combines "molecular" with "group" for emphasis.
molecular family
Combines "molecular" with "family" for emphasis.
FAQs
How can I use "class of molecules" in a sentence?
Use "class of molecules" to describe a group that shares similar characteristics. For example, "Lipids are a "class of molecules" essential for cell structure".
What's the difference between "class of molecules" and "type of molecules"?
"Class of molecules" and "type of molecules" are largely interchangeable. "Class" suggests a more formal or scientific categorization, while "type" is slightly more general.
Is it correct to say "molecules of a class" instead of "class of molecules"?
While "molecules of a class" is grammatically correct, ""class of molecules"" is the more common and idiomatic way to express the concept.
What are some examples of a "class of molecules"?
Examples include "proteins", "carbohydrates", "lipids", and "nucleic acids". These are all broad "class of molecules" with distinct properties and functions.
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
86%
Authority and reliability
4.6/5
Expert rating
Real-world application tested