### Crossword clues for sphericity

##### The Collaborative International Dictionary
Sphericity

Sphericity \Sphe*ric"i*ty\, n. [Cf. F. sph['e]ricit['e].] The quality or state of being spherial; roundness; as, the sphericity of the planets, or of a drop of water.

##### Wiktionary
sphericity

n. 1 (context chiefly uncountable English) The quality of being spherical, being a sphere. 2 (context geometry countable English) The ratio of the surface area of a given particle to the surface area of a sphere with the same volume.

##### WordNet
sphericity

n. the roundness of a 3-dimensional object [syn: sphericalness, globosity, globularness, rotundity]

##### Wikipedia
Sphericity

Sphericity is a measure of how spherical (round) an object is. As such, it is a specific example of a compactness measure of a shape. Defined by Wadell in 1935, the sphericity, Ψ, 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:

$$\Psi = \frac{\pi^{\frac{1}{3}}(6V_p)^{\frac{2}{3}}}{A_p}$$

where V is volume of the particle and A is the surface area of the particle. The sphericity of a sphere is unity by definition and, by the isoperimetric inequality, any particle which is not a sphere will have sphericity less than 1.

#### Usage examples of "sphericity".

They agreed with our concept of sphericity, politely disagreed with our concept of mortality, strongly agreed with the notions of pain and joy.

On-screen schematics flashed by Veidt's device told him little, but it was easy enough to imagine modules being hoisted and repositioned by robotic arms, gigantic plates retracting, a change in the very sphericity of the world.