### What does **sphericity** mean?

# Definitions for sphericity

spheric·i·ty

#### This dictionary definitions page includes all the possible meanings, example usage and translations of the word **sphericity**.

### Princeton's WordNet

sphericity, sphericalness, globosity, globularness, rotundity, rotundnessnoun

the roundness of a 3-dimensional object

### Wiktionary

sphericitynoun

The quality of being spherical, being a sphere.

sphericitynoun

The ratio of the surface area of a given particle to the surface area of a sphere with the same volume.

**Etymology:**From. In the geometrical sense, defined by the geologist Hakon Wadell in 1935.

### Samuel Johnson's Dictionary

Sphericalness, Sphericitynoun

Roundness; rotundity.

**Etymology:**from*sphere.*Such bodies receive their figure and limits from such lets as hinder them from attaining to that

*sphericalness*they aim at.*Dig.*Water consists of small, smooth, spherical particles: their smoothness makes ’em slip easily upon one another; the

*sphericity*keeps ’em from touching one another in more points than one.*George Cheyne, Phil. Princ.*

### Wikipedia

Sphericity

Sphericity is a measure of how closely the shape of an object resembles that of a perfect sphere. For example, the sphericity of the balls inside a ball bearing determines the quality of the bearing, such as the load it can bear or the speed at which it can turn without failing. Sphericity is a specific example of a compactness measure of a shape. Defined by Wadell in 1935, the sphericity, Ψ {\displaystyle \Psi } , of a particle is the ratio of the surface area of a sphere with the same volume as the given particle to the surface area of the particle:

### ChatGPT

sphericity

Sphericity is a measure of how closely a three-dimensional object resembles a perfect sphere. It is defined as the ratio of the surface area of a perfect sphere, which has the same volume as the given object, to the surface area of the object. Higher sphericity indicates a closer resemblance to a sphere. This concept is used in various fields including mathematics, physics, and geology.

### Webster Dictionary

Sphericitynoun

the quality or state of being spherial; roundness; as, the sphericity of the planets, or of a drop of water

**Etymology:**[Cf. F. sphricit.]

### Freebase

Sphericity

Sphericity is a measure of how spherical an object is. As such, it is a specific example of a compactness measure of a shape. Defined by Wadell in 1935, the sphericity, of a particle is: the ratio of the surface area of a sphere to the surface area of the particle: where is volume of the particle and is the surface area of the particle. The sphericity of a sphere is 1 and, by the isoperimetric inequality, any particle which is not a sphere will have sphericity less than 1.

### Matched Categories

### Numerology

Chaldean Numerology

The numerical value of sphericity in Chaldean Numerology is:

**6**Pythagorean Numerology

The numerical value of sphericity in Pythagorean Numerology is:

**6**

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## Translations for **sphericity**

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"sphericity." *Definitions.net.* STANDS4 LLC, 2023. Web. 10 Dec. 2023. <https://www.definitions.net/definition/sphericity>.

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