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
lengths
Grammar usage guide and real-world examplesUSAGE SUMMARY
The word "lengths" is correct and usable in written English.
You can use it when you want to describe how far something extends or how long it is. For example, "The bridge spans several lengths across the river."
✓ Grammatically correct
The term "big wall" is generally used by climbers to describe some of the world's longest climbs – usually predominantly on rock involving up to 30 rope lengths, and on which most climbers would expect to spend days climbing.
With three different angles to work with, it's easiest to call them A, B and C, and call the lengths of the sides opposite them a, b c.
His Jeanie's Place is overlooked at 9-1 here but she did remarkably well to overcome a slow start and cuff her rivals by three lengths on her debut.
Alternative expressions(15)
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
He also took up embroidery on pudding cloths and lengths of deckchair canvas, using the skeleton of an old deckchair as an embroidery frame.
News & Media
The term "big wall" is generally used by climbers to describe some of the world's longest climbs – usually predominantly on rock involving up to 30 rope lengths, and on which most climbers would expect to spend days climbing.
News & Media
And it's a shame Eric Schmidt isn't here to hear me say this direct: when Google goes to extraordinary lengths to avoid paying its taxes, I say it's wrong.
News & Media
I cut lengths for the straps from a piece of tougher hide.
News & Media
In Mandarin the number four sounds so similar to the word for death that Chinese go to great lengths to avoid saying it.
News & Media
With three different angles to work with, it's easiest to call them A, B and C, and call the lengths of the sides opposite them a, b c.
Wiki
Scalene triangles, on the other hand, have every side and angle different, so if you ever have to calculate their lengths and angles you're likely to want to use the the Sine Rule and the Cosine Rule (unless they happen to be right-angled scalene triangles, which obviously makes things easier).
Wiki
We look to the USA to lead the way with TV women in their 60s, 70s and 80s - and it's true they are inspirational - but the point is they don't look like OAPs and go to great lengths to keep any sign of aging at bay.
News & Media
I've seen celebrities go to extraordinary lengths to avoid the public in similar situations, but all three of today's hosts are busying around trying to make Charlotte's set visit special.
News & Media
Everyone appreciates effort so if men do appear to melt before her, I think it's probably because they can see the feverish lengths she is going to, to look as if she fancies them, and the ludicrousness of it melts their hearts a little bit, even Sugar's.
News & Media
The interest revolved around rents and lengths of retail leases.
News & Media
Expert writing Tips
Best practice
When describing physical objects, be specific about which "lengths" you are referring to (e.g., width, height, depth).
Common error
Avoid using the plural "lengths" when referring to a single measurement. Use "length" for singular instances and "lengths" when discussing multiple measurements.
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The primary grammatical function of "lengths" is as a plural noun. It typically acts as the object of a verb or preposition, denoting multiple instances of measurement or extent. Ludwig AI provides examples where it refers to rope lengths in climbing or the sides of triangles.
Frequent in
News & Media
52%
Wiki
14%
Lifestyle
7%
Less common in
Sport
4%
Business
4%
Opinion
4%
Ludwig's WRAP-UP
In summary, "lengths" functions as a plural noun most often used to describe multiple measurements or extents. It is grammatically correct and very common in various contexts, especially news and media. While versatile, Ludwig AI shows that its register is generally neutral to technical, and it's essential to use "lengths" when referring to more than one measurement, avoiding confusion with the singular form "length". Consider alternatives such as "dimensions" or "extents" for nuanced meanings.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
dimensions
Replaces "lengths" with a term referring to spatial extent in various directions.
measurements
Substitutes "lengths" with a general term for quantifiable sizes.
extents
Uses a more formal term indicating the range or scope of something.
distances
Replaces "lengths" to emphasize the space between two points.
proportions
Emphasizes the relative size or ratio of different "lengths".
spans
Focuses on the extent or reach of something from one point to another.
segments
Refers to distinct parts or sections of "lengths".
stretches
Highlights continuous expanses or extensions.
ranges
Indicates the scope or limits within which "lengths" vary.
elongations
Focuses on the act or result of making something longer.
FAQs
How is "lengths" used in geometry?
In geometry, "lengths" typically refers to the measurement of the sides of shapes, like triangles or rectangles. You can also use it with general 2D or 3D objects such as sphere in the context of time and distance.
What's the difference between "lengths" and "size"?
"Lengths" specifically refers to a linear measurement, while "size" is a more general term that can encompass volume, area, or other dimensions.
What is a synonym for "lengths"?
Synonyms for "lengths" include "dimensions", "measurements", or "extents", depending on the specific context.
How do you use "lengths" in a sentence?
You can use "lengths" in a sentence like this: "The various "lengths" of the boards need to be precisely measured."
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
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested