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
by requirement
Grammar usage guide and real-world examplesUSAGE SUMMARY
"by requirement" is correct and usable in written English.
It is used to indicate something is done because it's required or necessary. For example, "The company mandated that employees must attend a safety seminar by requirement."
✓ Grammatically correct
Science
News & Media
Academia
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
23 human-written examples
Hence, evolution is triggered by requirement changes, and not by bug fixing or refactoring.
However, the early design optimization phases for haptic devices are characterized by requirement conflicting requirements with uncertainties.
Science
Students in the full-time two-year MIA or MPA program are encouraged to use the SIPA's Course Search that categorizes courses by requirement.
Academia
Within the United States, all three of these enforcement methods are available among states: the first by exercise of police power, the second for enforcement of criminal laws, and the third by requirement of the full faith and credit clause of the federal constitution.
Academia
Overall these findings support a view of software design as involving a mixed breadth-first and depth-first solution development approach, with strategic switching to depth-first design being triggered by requirement complexity and being mediated by associated feelings of uncertainty.
Science
Shock defined by requirement of vasoconstrictor was recorded in 31 patients (23%).
Science
Human-verified similar examples from authoritative sources
Similar Expressions
37 human-written examples
Civil air navigation is profoundly influenced by the requirements of following the instructions of these controllers.
Encyclopedias
These are always development process-dependent and need to be considered in requirement-by-requirement basis.
He is protective of religious rights and found that they could be infringed by requirements of the Affordable Care Act requiring employers to provide contraceptive services.
News & Media
Each species is restricted in distribution by requirements of feeding and nesting areas.
Encyclopedias
That has given the country more freedom, although it is still bound by requirements to reduce its budget deficit.
News & Media
Expert writing Tips
Best practice
Use "by requirement" to clearly indicate that an action or condition is mandated or essential, avoiding ambiguity in your writing. This phrase works well in formal contexts.
Common error
Avoid using "by requirement" in casual conversation or informal writing. Opt for simpler alternatives like "because it's needed" or "it's necessary" to maintain a natural tone.
Source & Trust
81%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "by requirement" functions as an adverbial modifier, specifying the condition or reason for an action or state. It indicates that something is done or exists because it is dictated or necessitated by a rule, regulation, or other imperative. Ludwig AI confirms its usability in various contexts.
Frequent in
Science
40%
News & Media
28%
Academia
16%
Less common in
Encyclopedias
4%
Wiki
4%
Formal & Business
4%
Ludwig's WRAP-UP
In summary, "by requirement" is a grammatically correct phrase used to indicate that something is mandated or necessary. Ludwig AI confirms its validity. It is most frequently found in scientific, news, and academic contexts, signaling a formal register. While versatile, it's best to reserve its use for situations where a formal tone is appropriate. For informal settings, consider alternatives like "when required" or "because it's required". Remember to use "by requirement" judiciously to maintain the desired level of formality in your writing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
as a requirement
Uses "as" to emphasize the condition or stipulation.
when required
Focuses on the timing or condition of needing something.
due to a requirement
Highlights the cause or reason for an action.
because it's required
More explicitly states the reason for the action.
out of necessity
Emphasizes the essential nature of the action.
as a matter of necessity
Highlights the urgent or unavoidable aspect.
on demand
Highlights the availability or need for immediate action.
mandatorily
Adverb form emphasizing the compulsory nature.
under obligation
Highlights the binding nature of the requirement.
necessarily
Emphasizes that something cannot be avoided.
FAQs
How can I use "by requirement" in a sentence?
You can use "by requirement" to indicate that something is done because it is required or necessary, such as "The data must be submitted by requirement of the new regulation".
What phrases are similar to "by requirement"?
Similar phrases include "as a requirement", "when required", or "because it's required". The best choice depends on the specific context.
Is "by requirement" formal or informal?
"By requirement" is generally considered a more formal phrase. In informal contexts, simpler alternatives may be more appropriate.
Can "by requirement" be replaced with "required by"?
While they share a similar meaning, the phrase "required by" often flows more naturally in many sentences, such as "required by law". However, "by requirement" is also correct and usable.
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
4.1/5
Expert rating
Real-world application tested