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
are characterized with a
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "are characterized with a" is not correct in standard written English.
It is typically used when describing the features or qualities of something, but the correct preposition should be "by" instead of "with." Example: "The species are characterized by a unique adaptation to their environment."
⚠ May contain grammatical issues
Science
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
15 human-written examples
The obtained CNT materials are characterized with a variety of bulk and surface characterization techniques (XPS, Raman, TGA, TEM) and the obtained results could be correlated successfully with the severity of the treatment and the electrochemical properties of the CNTs.
Science
The properties are characterized with a single 174Yb + ion as a mobile point scatterer.
Sheet forming operations are characterized with a significant scatter of the results.
Electrical performances of the NW array FETs and solar cells are characterized with a standard electrical probe station and an Agilent 4155C semiconductor analyzer.
Science
The highly porous morphologies of various RuO2·xH2O TiO2 composites are characterized with a field emission scanning electron microscope (FE-SEM).
Science
But they are characterized with a lot of problems, which include non-renewability, erratic prices, global warming, ecosystem imbalance, health hazards, and other environmental/agricultural effects like pollution and food shortage.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
45 human-written examples
These predicted state evolution behaviors are characterized with an automaton model.
The clusters are characterized with an ellipse shape borders spanning the length of up to 3σ in each dimension.
Science
These plants are characterized with an increased degree of lipid peroxidation and photoinhibition, and the regeneration of zeaxanthin from violaxanthin was slower due to insufficient ascorbate content.
Science
The capacitance was characterized with a Wayne Kerr 6500B impedance analyzer.
Science
The etching process was characterized with a statistical experimental design.
Science
Expert writing Tips
Best practice
Avoid using "are characterized with a". The correct and more common phrasing is "are characterized by a" when describing the distinguishing features of something.
Common error
Don't use "with" when you mean "by" in this context. "Characterized by" is the standard construction for indicating what defines something.
Source & Trust
81%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "are characterized with a" is intended to describe the qualities or features of a subject. However, according to Ludwig AI, it is grammatically incorrect and should be replaced with "are characterized by a".
Frequent in
Science
100%
Less common in
News & Media
0%
Formal & Business
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "are characterized with a" is grammatically incorrect in standard English. Ludwig AI suggests replacing "with" with "by" to create the correct phrasing: "are characterized by a". Despite its grammatical error, the phrase appears with common frequency in scientific and technical contexts. The intended purpose is to describe or define the attributes of a subject. Therefore, it's crucial to use the correct preposition to maintain grammatical accuracy and clarity. While some examples exist in Ludwig, prioritize using the grammatically sound alternative.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
are defined by a
Replaces "characterized with" with "defined by", emphasizing essential qualities that determine the nature of something. It indicates core, defining traits.
are marked by a
Uses "marked by" instead of "characterized with", highlighting distinctive features or indications.
are distinguished by a
Employs "distinguished by", focusing on unique features that set something apart from others.
are notable for a
Substitutes "characterized with" with "notable for", emphasizing prominent or remarkable aspects.
are identified by a
Replaces "characterized with" with "identified by", emphasizing recognition based on specific traits or features.
are known for a
Uses "known for" instead of "characterized with", focusing on widely recognized attributes.
are typified by a
Substitutes "characterized with" with "typified by", highlighting representative or typical features.
are featured with a
Replaces "characterized with" with "featured with", focusing on elements which are showcased or prominently displayed.
are embodied with a
Employs "embodied with", focusing on aspects that express or give a tangible form.
are associated with a
Uses "associated with" instead of "characterized with", highlighting connections or relationships with specific traits.
FAQs
What is the correct way to use "characterized" in a sentence?
The correct way to use "characterized" in a sentence is with the preposition "by", as in "The species "are characterized by a" unique adaptation".
What preposition should I use with "characterized"?
You should use the preposition "by" with "characterized". The phrase "characterized with" is grammatically incorrect.
Is "characterized with" ever correct?
In standard English, "characterized with" is generally considered incorrect. The correct phrasing is "characterized by".
What can I say instead of "are characterized with a"?
You can use alternatives like "are defined by a", "are marked by a", or "are distinguished by a" depending on the context.
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
81%
Authority and reliability
2.8/5
Expert rating
Real-world application tested