Plural of diameter

regular plural

The plural of diameter is diameters.

Forms of diameter

Viable non-malformed singleton pregnancies were selected for cerebellar measurements; transcerebellar diameter, (TCD), left and right cerebellar diameters (LCD, RCD).2015 October 23, “Periconception Maternal Folate Status and Human Embryonic Cerebellum Growth Trajectories: The Rotterdam Predict Study”...
Any two diameters of a circle intersect each other at the centre.From the entry intersect
Columns with varying polarities, varying internal diameters, and different lengths have been utilized in metabonomic studies.2021, Gas Chromatography, page 729. From the entry metabonomic
The aortic ring, aortic bulb and sinotubular junction diameters were 24, 31 and 37 mm respectively.2014 September 28, Krzysztof Mokrzycki et al., “Thoracic aorta aneurysm successfully operated on during pregnancy”, in Kardiochirurgia i…. From the entry sinotubular
In normal woman these clitorial diameters are in the range of 5 mm.2013, Amitava Pal, Rupali Modak, Practical Manual of Gynecology, page 254. From the entry clitorial

noun Any straight line between two points on the circumference of a circle that passes through the center of the circle; a chord that passes through the center of the circle.
noun The length of such a line.
noun The maximum distance between any two points in a metric space.

What is the plural of diameter?: The plural of diameter is diameters.
Is diameter countable?: Diameter is a countable noun.

Adapted from Wiktionary: diameter (page history and authors) and the entries of its forms. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws left out forms marked obsolete, archaic, rare or dialectal and added the examples. Wiktionary data of 2026-09-02.

Last updated: 2026-09-02

Cite this page: “Plural of diameter.” Word.ws, https://word.ws/plural/diameter. Based on Wiktionary, CC BY-SA 4.0.