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Diametre vs. Diameter — Which is Correct Spelling?

Edited by Tayyaba Rehman — By Fiza Rafique — Updated on April 17, 2024
"Diametre" is the incorrect spelling of "diameter." "Diameter" refers to a straight line passing from side to side through the center of a body or figure, especially a circle or sphere.
Diametre vs. Diameter — Which is Correct Spelling?

Which is correct: Diametre or Diameter

How to spell Diameter?


Incorrect Spelling


Correct Spelling

Key Differences

American English favors the spelling "diameter," distinguishing it from the British variant "diametre."
Remember, "diameter" is spelled with "meter" at the end, reflecting its meaning related to measurement.
The word "diameter" stems from Greek origins where "dia-" means across and "metron" means measure, hinting at its correct spelling.

How Do You Spell Diameter Correctly?

Incorrect: She wrote down the wrong diametre in her notes.
Correct: She wrote down the wrong diameter in her notes.
Incorrect: He calculated the pipe's diametre incorrectly.
Correct: He calculated the pipe's diameter incorrectly.
Incorrect: The diametre of the circle is 10 inches.
Correct: The diameter of the circle is 10 inches.
Incorrect: What's the diametre of this container?
Correct: What's the diameter of this container?
Incorrect: The diametre of the wheel affects its performance.
Correct: The diameter of the wheel affects its performance.

Diameter Definitions

A straight line passing through the center of a circle, connecting two points on the circumference.
The diameter of the circle was exactly 20 centimeters.
In mathematics, the longest distance from one end of a figure to another passing through the center.
The diameter divides the circle into two equal halves.
In general use, a symbol of scope or range.
The discussion ranged over a wide diameter of topics.
In geometry, a diameter of a circle is any straight line segment that passes through the center of the circle and whose endpoints lie on the circle. It can also be defined as the longest chord of the circle.
A straight line segment passing through the center of a figure, especially of a circle or sphere, and terminating at the periphery.
The length of such a segment.
Thickness or width.
A unit of magnification equal to the number of times an object's linear dimensions is increased by the magnifying apparatus.
(geometry) Any straight line between two points on the circumference of a circle that passes through the centre/center of the circle.
(geometry) The length of such a line.
(geometry) The maximum distance between any two points in a metric space
(graph theory) The maximum eccentricity over all vertices in a graph.
Any right line passing through the center of a figure or body, as a circle, conic section, sphere, cube, etc., and terminated by the opposite boundaries; a straight line which bisects a system of parallel chords drawn in a curve.
The length of a straight line through the center of an object from side to side; width; thickness; as, the diameter of a tree or rock.
The distance through the lower part of the shaft of a column, used as a standard measure for all parts of the order. See Module.
The length of a straight line passing through the center of a circle and connecting two points on the circumference
A straight line connecting the center of a circle with two points on its perimeter (or the center of a sphere with two points on its surface)
The length of such a line.
He measured the diameter of the tree trunk.
The width of a circular or cylindrical object.
The diameter of the tire is critical for fitting.

Diameter Meaning in a Sentence

The planet's diameter is roughly 12,742 kilometers.
They measured the diameter of each balloon.
The tree's diameter has increased since last year.
The mirror's diameter makes it perfect for the hallway.
The pipe's diameter determines how much water it can carry.
Measure the diameter to ensure the cover will fit.
The telescope can observe objects down to one millimeter in diameter.
The wheel's diameter was too large for the car.
We need to know the bridge's diameter for the report.
The new model has a smaller diameter than the previous one.
Can you calculate the diameter if the circumference is known?
I need the diameter to calculate the area of the circle.
What's the diameter of the pizza?
The hose has a diameter of three inches.
The diameter of the wheel influences the bike's performance.
Calculate the circle's diameter using the radius.
He explained how to find the diameter of a circle.
Her bracelet has a diameter of eight centimeters.
The diameter of this bowl is ideal for soup.
They compared the diameters of two planets.
Her project involved measuring the diameter of different types of balls.
The diameter of the base must be the same as the top.
He noted the diameter on the drawing.
If you know the radius, you can double it to find the diameter.
The cable's diameter affects its flexibility.

Diameter Idioms & Phrases

Full diameter

The entire scope or range of something.
The course covers the full diameter of Renaissance art.

Cut to the diameter

To address or analyze something comprehensively or completely.
His essay cut to the diameter of the issue.

Diameter of vision

The scope of what one can foresee or imagine.
Her diameter of vision for the company’s growth is impressive.

Expand the diameter

To increase the scope or range.
The new policy will expand the diameter of healthcare coverage.

Diameter of influence

The extent to which influence or power reaches.
The politician's diameter of influence is vast.

Double the diameter

To increase the size or scope to twice its original.
They plan to double the diameter of the garden.

Increase in diameter

A growth or expansion in size or scope.
The increase in diameter of the tree trunk is a good sign.

Half the diameter

Half the size or scope of something.
The smaller model is only half the diameter of the original.

Diameter measurement

The act of measuring the size or extent of something.
Diameter measurement is crucial in manufacturing pipes.

Beyond the diameter

Going beyond the typical or expected limits; exceeding norms.
His thesis went beyond the diameter of traditional research.

Diameter comparison

Evaluating the relative size or extent of two or more objects.
The study involved a diameter comparison of various sports balls.

Visible diameter

The part that is clearly observable or measurable.
The visible diameter of the eclipse was stunning.

Diameter across

Used to describe the extent across an object or group.
The diameter across the new auditorium is 200 feet.

Diameter of the circle

Often used to specify the size of a circle.
They discussed the diameter of the circle in their math class.

Shrink the diameter

To reduce the scope or size.
Budget cuts have shrunk the diameter of the program.

Diameter stretch

An extension or expansion in scope or size.
The new bridge represents a diameter stretch in engineering.

Maximum diameter

The largest possible size or extent.
The maximum diameter allowed for luggage is 45 inches.

Diameter reduction

A decrease in size or scope.
The project requires a diameter reduction in the pipes used.

Diameter under examination

The focus or subject under detailed scrutiny.
The diameter under examination in this case is the effect of the new law.

Diameter of knowledge

The breadth or extent of one's understanding or expertise.
His diameter of knowledge on the subject is unmatched.

Common Curiosities

What is a stressed syllable in diameter?

The stressed syllable in diameter is the first one, "di."

How do we divide diameter into syllables?

We divide diameter into syllables like this: di-am-e-ter.

What is the pronunciation of diameter?

Diameter is pronounced as /ˈdaɪ.əˌmɪ.tər/.

Why is it called diameter?

Diameter is called so because it comes from the Greek word diametros, which means "measure across."

What is the singular form of diameter?

The singular form of diameter is "diameter."

How many syllables are in diameter?

Diameter has four syllables.

How is diameter used in a sentence?

Diameter is used as a noun to describe the length of a straight line passing through the center of a circle or sphere from one side to another.

What is another term for diameter?

Another term for diameter is "width."

What is the plural form of diameter?

The plural form of diameter is "diameters."

What is the verb form of diameter?

Diameter is a noun; it does not have a verb form.

Is diameter an adverb?

No, diameter is not an adverb; it is a noun.

Is diameter a negative or positive word?

Diameter is a neutral word; it does not inherently carry a positive or negative connotation.

Is diameter a collective noun?

No, diameter is not a collective noun.

What is the root word of diameter?

The root word of diameter is meter, coming from the Greek metron, meaning measure.

What part of speech is diameter?

Diameter is a noun.

Is the diameter term a metaphor?

Diameter can be used metaphorically to describe the range or breadth of something.

Is the word diameter imperative?

No, diameter is a noun and not used in the imperative mood.

Is the word “diameter” a Direct object or an Indirect object?

Diameter can be a direct object in sentences like "They measured the diameter."

What is the opposite of diameter?

The opposite of diameter might be considered "radius," referring to half the diameter from the center to the edge of a circle.

Is diameter a countable noun?

Yes, diameter is a countable noun; you can have one or more diameters.

Is the word diameter Gerund?

No, diameter is a noun and not a gerund.

Which determiner is used with diameter?

Determiners such as "the," "a," or "an" can be used with diameter, depending on the context.

Which preposition is used with diameter?

Common prepositions used with diameter include "of" and "in."

Which conjunction is used with diameter?

Conjunctions such as "and" or "or" can be used to connect clauses involving diameter.

Is diameter a noun or adjective?

Diameter is a noun.

Is diameter an abstract noun?

No, diameter is a concrete noun, as it refers to a measurable attribute.

Is diameter a vowel or consonant?

Diameter is a word, not a vowel or consonant.

Which vowel is used before diameter?

The vowel used before diameter can vary; there is no specific rule, as it depends on the preceding word.

Which article is used with diameter?

The definite article "the" or the indefinite article "a" can be used with diameter depending on the context.

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Author Spotlight

Written by
Fiza Rafique
Fiza Rafique is a skilled content writer at, where she meticulously refines and enhances written pieces. Drawing from her vast editorial expertise, Fiza ensures clarity, accuracy, and precision in every article. Passionate about language, she continually seeks to elevate the quality of content for readers worldwide.
Tayyaba Rehman is a distinguished writer, currently serving as a primary contributor to As a researcher in semantics and etymology, Tayyaba's passion for the complexity of languages and their distinctions has found a perfect home on the platform. Tayyaba delves into the intricacies of language, distinguishing between commonly confused words and phrases, thereby providing clarity for readers worldwide.

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