What does diameter mean?
Definitions for diameter
daɪˈæm ɪ tərdi·am·e·ter
This dictionary definitions page includes all the possible meanings, example usage and translations of the word diameter.
Princeton's WordNet
diameter, diamnoun
the length of a straight line passing through the center of a circle and connecting two points on the circumference
diameternoun
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)
Wiktionary
diameternoun
Any straight line between two points on the circumference of a circle that passes through the centre/center of the circle.
diameternoun
The length of such a line.
diameternoun
The maximum distance between any two points in a metric space
diameternoun
The maximum eccentricity over all vertices in a graph.
Samuel Johnson's Dictionary
DIAMETERnoun
The line, which passing through the center of a circle, or other curvilinear figure, divides it into equal parts.
Etymology: διὰ and μέτϱον.
The space between the earth and the moon, according to Ptolemy and Alfraganus, is seventeen times the diameter of the earth, which makes, in a gross account, about one hundred and twenty thousand miles. Walter Raleigh, History of the World.
The bay of Naples is the most delightful one that I ever saw: it lies in almost a round figure of about thirty miles in the diameter. Joseph Addison, Remarks on Italy.
ChatGPT
diameter
Diameter refers to a straight line passing from one side of a circle (or sphere) to another through its center. More generally, in geometry, it can refer to the maximum distance between any two points within a given shape or object.
Webster Dictionary
Diameternoun
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
Diameternoun
a diametral plane
Diameternoun
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
Diameternoun
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
Etymology: [F. diamtre, L. diametros, fr. Gr. ; dia` through + measure. See Meter.]
Wikidata
Diameter
In geometry, the 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 be also defined as the longest chord of the circle. Both definitions are also valid for the diameter of a sphere. The word "diameter" is derived from Greek διάμετρος, "diameter of a circle", from δια-, "across, through" + μέτρον, "measure". In more modern usage, the length of a diameter is also called the diameter. In this sense one speaks of the diameter rather than a diameter, because all diameters of a circle or sphere have the same length, this being twice the radius. For a convex shape in the plane, the diameter is defined to be the largest distance that can be formed between two opposite parallel lines tangent to its boundary, and the width is defined to be the smallest such distance. Both quantities can be calculated efficiently using rotating calipers. For a curve of constant width such as the Reuleaux triangle, the width and diameter are the same because all such pairs of parallel tangent lines have the same distance. See also Tangent lines to circles.
Chambers 20th Century Dictionary
Diameter
dī-am′e-tėr, n. the measure through or across: a straight line passing through the centre of a circle or other figure, terminated at both ends by the circumference.—adjs. Diam′etral, Diamet′ric, -al, in the direction of a diameter: pertaining to the diameter: like the opposite ends of the diameter (as in diametrical opposition).—advs. Diam′etrally, in a diametral manner; Diamet′rically, exactly.—Tactical diameter, the space covered by a steamer in turning 180° out of her original course. [Through Fr. and L. from Gr. diametros—dia, through, metrein, to measure.]
Dictionary of Nautical Terms
diameter
In geometry, a right line passing through the centre of any circular figure from one point of its circumference to another.
Military Dictionary and Gazetteer
diameter
In both a military and geometrical sense, implies a right line passing through the centre of a circle, and terminated at each end by the circumference thereof.
Matched Categories
British National Corpus
Nouns Frequency
Rank popularity for the word 'diameter' in Nouns Frequency: #2461
Usage in printed sourcesFrom:
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Anagrams for diameter »
diatreme
Numerology
Chaldean Numerology
The numerical value of diameter in Chaldean Numerology is: 8
Pythagorean Numerology
The numerical value of diameter in Pythagorean Numerology is: 3
Examples of diameter in a Sentence
Based on the given absolute magnitude, and given how exceptionally red it looked in 2014 precovery images from CFHT (the g - r color was 0.9, and r - i was 0.5!) I would estimate at an albedo of 0.01-0.08 a diameter of 130-370 kilometers (nominally 160) which puts it on a similar scale, if not larger than, Sarabat's huge comet C/1729 P1, and almost undoubtedly the largest Oort Cloud object ever discovered- almost in dwarf planet territory! i have little doubt in my mind that as this gets closer to the sun, it will begin displaying the coma and tail typical of every other object yet seen in its orbit.
As I got closer, the flames were just bigger and bigger, it was shooting up to 200 feet or more, and a fireball maybe 10 to 15 feet in diameter. It was like out of a movie.
The penile artery that delivers the blood flow to the penis is a much smaller diameter, and it's the smaller blood vessels which show the first signs of disease, they are unable to dilate and deliver sufficient blood flow.
Unfortunately, we are severely lacking in technology, it’s difficult trying to find something in a specific geologic region that is in a confined space that can be 4 feet in diameter and 90 feet underground.
This was completely unexpected, and we are struggling to understand what it means, but I will speculate that this is not likely the original crater floor. From the diameter of Jezero Crater, we expect the original crater floor is significantly deeper than where we are right now.
Popularity rank by frequency of use
References
Translations for diameter
From our Multilingual Translation Dictionary
- قطرArabic
- ব্যাসBengali
- diàmetreCatalan, Valencian
- průměrCzech
- diamedrWelsh
- diameterDanish
- DurchmesserGerman
- διάμετροςGreek
- diámetroSpanish
- قطرPersian
- läpimitta, halkaisijaFinnish
- diamètreFrench
- trastomhas, lárlíneIrish
- קוטרHebrew
- व्यासHindi
- dyamètHaitian Creole
- átmérőHungarian
- տրամագիծArmenian
- diametroItalian
- 直径Japanese
- ವ್ಯಾಸKannada
- 직경Korean
- lineLatin
- пречник, дијаметарMacedonian
- diameter, garis pusatMalay
- diameterNorwegian
- doorsnede, middellijn, diameterDutch
- diameterNorwegian Nynorsk
- średnicaPolish
- diâmetroPortuguese
- diametruRomanian
- диаметр, поперечникRussian
- prečnikSerbo-Croatian
- diameterSwedish
- kipenyoSwahili
- đường kínhVietnamese
Get even more translations for diameter »
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"diameter." Definitions.net. STANDS4 LLC, 2024. Web. 12 Dec. 2024. <https://www.definitions.net/definition/diameter>.
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