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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
reduces by one
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "reduces by one" is correct and usable in written English.
It can be used in contexts where you want to indicate a decrease in quantity or number by one unit. Example: "Each time the button is pressed, the counter reduces by one."
✓ Grammatically correct
Science
News & Media
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 first assumption reduces by one the number of variables to estimate and is justified by measurements of active relaxation time (average time for full relaxation of 122.5 and 206.5 ms for controls and heart failure cases, respectively Zile et al. 2004).
Human-verified similar examples from authoritative sources
Similar Expressions
59 human-written examples
Allowing the age pattern to differ for people younger and older than retirement (specification 2) halves the size of the relationship for retirement aged men and reduces by one-quarter the effect for retirement aged women.
Science
The rules, which take effect on Jan . 4 will reduce by one hour a driver's maximum workday, including driving, loading and unloading, making it 14 hours.
News & Media
The Pata Honda rider broke clear on lap seven of a race that was reduced by one lap to 17 due to heavy rainfall.
News & Media
On average the number of non-responders was reduced by one third.
Unfortunately, the non-compromise he floated does not reduce by one penny the amount of money he would force Catholics to spend on those items.
News & Media
Army officials had previously said the timeline would be reduced by one year, to 2011.
News & Media
Let simmer over low heat, stirring often, until mixture is reduced by one half, about 2 1/2 hours.
News & Media
Since this has disappeared SLTs have been reduced by one third and are likely to be further cut next year.
News & Media
But while the I.O.C. started women's wrestling with four weight classes, it reduced by one, to seven, the number of weight classifications for men.
News & Media
OFFICE OF THE COMMISSIONER--Announced the seven-game suspension of Cleveland Indians RHP Bartolo Colon has been reduced by one game.
News & Media
Expert writing Tips
Best practice
When describing changes in numerical values or quantities, ensure the context clearly indicates what is being reduced. Be specific to avoid ambiguity.
Common error
Avoid using "reduces by one" when the context implies a proportional reduction rather than an absolute decrease of one unit. For proportional reductions, consider alternatives like "reduces by half" or "decreases by a percentage".
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "reduces by one" functions as a verb phrase indicating a subtraction of a single unit from a quantity. Ludwig AI confirms its grammatical correctness. For example, "The number of mobile vertebrae is reduced by one."
Frequent in
Science
65%
News & Media
30%
Formal & Business
5%
Less common in
Ludwig's WRAP-UP
The phrase "reduces by one" is a grammatically sound and frequently employed expression to denote a decrease of exactly one unit. Ludwig AI confirms its validity. It commonly appears in scientific and news contexts to describe quantifiable reductions. When using this phrase, ensure clarity regarding what is being reduced. Alternatives include "decreases by one" or "diminishes by one", offering stylistic variations while maintaining semantic equivalence.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
decreases by one
Synonymous, but uses a different verb with a similar connotation.
diminishes by one
Uses "diminishes", offering a slightly more formal tone than "reduces".
is lowered by one
Focuses on the action being performed, using a passive voice.
drops by one
Emphasizes a sudden decrease.
is lessened by one
Uses "lessened", which implies making something smaller or less.
is subtracted by one
Directly uses mathematical terminology.
contracts by one
Implies a shrinking or reduction in size or scope.
is cut by one
Suggests a sharp or abrupt reduction.
is trimmed by one
Implies a small or neat reduction.
is shaved by one
Suggests a very slight reduction.
FAQs
How do I use "reduces by one" in a sentence?
Use "reduces by one" to indicate a decrease in quantity or number by a single unit. For example, "Each time the button is pressed, the counter "reduces by one"."
What can I say instead of "reduces by one"?
You can use alternatives like "decreases by one", "diminishes by one", or "is lowered by one" depending on the context.
Is it correct to say "reduce by one" instead of "reduces by one"?
The correct form depends on the subject. Use "reduce by one" with plural subjects or "I/you", and "reduces by one" with singular subjects (he/she/it).
What's the difference between ""reduces by one"" and "reduces to one"?
"Reduces by one" means to decrease by a single unit. "Reduces to one" means the final value is one.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested