# Dictionary Definition

diameter

### Noun

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

- Any straight line between two points on the circumference of a circle that passes through the centre/center of the circle.
- The length of such a line.
- For a set in a metric space is the maximum distance between two points
- The maximum eccentricity over all vertices in a graph.

#### Translations

line

- Dutch: middellijn
- Finnish: halkaisija
- French: diamètre
- Hebrew: קוטר (qot'er)
- Irish: trastomhas
- Italian: diametro
- Japanese: 直径 (chokkei)
- Spanish: diámetro
- Swedish: diameter

length of this line

#### Related terms

### See also

### See also

## Swedish

### Noun

diameter# 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

- angular diameter
- hydraulic diameter
- caliper, micrometer, tools for measuring diameters
- Eratosthenes, who calculated the diameter of the Earth around 240 BC.
- Jung's theorem, an inequality relating the diameter to the radius of the smallest enclosing ball

## References

## External links

- (geometry) Diameter and many other circle properties defined With interactive applets

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

air line, amplitude, area, axis, beeline, bigness, bisector, body, bore, boundary, breadth, bulk, caliber, center, chord, core, coverage, depth, diagonal, diaphragm, dimension, dimensions, direct line,
directrix, divider, edge, equator, expanse, expansion, extension, extent, gauge, girth, great-circle course,
greatness, halfway
mark, heart, height, interior, kernel, largeness, length, line of demarcation,
magnitude, mass, mean, measure, measurement, median, middle, midmost, midriff, midst, normal, nucleus, partition, perpendicular, proportion, proportions, radius, radius vector, range, reach, right line, scale, scope, secant, segment, semidiameter, shortcut, side, size, spread, straight, straight course,
straight line, straight stretch, straightaway, streamline, tangent, thick, thick of things, transversal, vector, volume, waist, waistline, width, zone