AskDefine | Define diameter

Dictionary Definition



1 the length of a straight line passing through the center of a circle and connecting two points on the circumference [syn: diam]
2 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)

User Contributed Dictionary



diameter (plural diameters)
  1. Any straight line between two points on the circumference of a circle that passes through the centre/center of the circle.
  2. The length of such a line.
  3. For a set in a metric space is the maximum distance between two points
  4. The maximum eccentricity over all vertices in a graph.


length of this line

Related terms



  1. diameter (length of diametrical chord)

See also




Extensive Definition

For the authentication, authorization, and accounting protocol, see Diameter (protocol).
The symbol or variable for diameter is similar in size and design to ø, the lowercase letter o with stroke. Unicode provides character number 8960 (hexadecimal 2300) for the symbol, which can be encoded in HTML webpages as ⌀ or ⌀. Proper display of this character, however, is unlikely in most situations, as most fonts do not have it included. (Your browser displays ⌀ in the current font.) In most situations the letter ø is acceptable, obtained in Microsoft Windows by holding the [Alt] key down while entering 0 2 4 8 on the numeric keypad.
The diameter symbol, ⌀, is distinct from the empty set symbol, ∅, and from an uppercase phi, Ø.
The diameter also refers to the approximate size of the corner of a frame of any given object to the nearest flat surface it represents.

See also


External links

diameter in Tosk Albanian: Durchmesser
diameter in Arabic: قطر الدائرة
diameter in Asturian: Diámetru
diameter in Bengali: ব্যাস
diameter in Bosnian: Prečnik
diameter in Bulgarian: Диаметър
diameter in Catalan: Diàmetre
diameter in Chuvash: Диаметр
diameter in Czech: Průměr (geometrie)
diameter in Welsh: Diamedr
diameter in Danish: Diameter
diameter in German: Durchmesser
diameter in Estonian: Diameeter
diameter in Modern Greek (1453-): Διάμετρος
diameter in Spanish: Diámetro
diameter in Esperanto: Diametro
diameter in Basque: Diametro
diameter in Persian: قطر (ریاضی)
diameter in French: Diamètre
diameter in Galician: Diámetro
diameter in Korean: 지름
diameter in Croatian: Promjer
diameter in Ido: Diametro
diameter in Indonesian: Diameter
diameter in Icelandic: Þvermál
diameter in Italian: Diametro
diameter in Hebrew: קוטר
diameter in Swahili (macrolanguage): Kipenyo
diameter in Luxembourgish: Duerchmiesser
diameter in Lithuanian: Diametras
diameter in Limburgan: Diameter
diameter in Marathi: व्यास
diameter in Malay (macrolanguage): Diameter
diameter in Dutch: Diameter
diameter in Japanese: 径
diameter in Norwegian: Diameter
diameter in Norwegian Nynorsk: Diameter
diameter in Low German: Dörmeter
diameter in Polish: Średnica
diameter in Portuguese: Diâmetro
diameter in Quechua: Raqta
diameter in Russian: Диаметр
diameter in Simple English: Diameter
diameter in Slovak: Priemer (geometria)
diameter in Serbian: Пречник
diameter in Serbo-Croatian: Promjer
diameter in Finnish: Halkaisija
diameter in Swedish: Diameter
diameter in Tamil: விட்டம்
diameter in Thai: เส้นผ่านศูนย์กลาง
diameter in Vietnamese: Đường kính
diameter in Tajik: Диаметр
diameter in Turkish: Çap
diameter in Ukrainian: Діаметр
diameter in Contenese: 直徑
diameter in Chinese: 直径

Synonyms, Antonyms and Related Words

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