Rho (disambiguation)

Rho (Ρ or ρ) is the 17th letter of the Greek alphabet.

Rho or RHO also may refer to:

Use as a symbol

Mathematics and statistics

• ρ, radial coordinate in the polar coordinate system
• ρ, used in physics instead of r in the spherical coordinate system
• ρ, radial coordinate in the cylindrical coordinate system
• ρ, a term in toroidal coordinates
• ρ, magnetic coordinates in toroidal and poloidal coordinates
• ρ, spectral radius of a square matrix
• Pollard's rho algorithm, for integer factorization
• Pollard's rho algorithm for logarithms
• ρ, prime constant
• ρ, plastic ratio, a geometrical proportion
• ρ, Spearman's rank correlation coefficient in statistics
• ρ, Pearson correlation coefficient in statistics

Physics

• ρ, density of a material
• ρ, volume charge density
• ρ, electrical resistivity of a material
• Rho meson, in particle physics

Other fields

• Rho factor, a bacterial protein
• Rho family of GTPases, including RhoA, RhoB, and RhoC
• Rhodopsin, a protein encoded by the RHO gene
• ρ, reaction constant in the Hammett equation in chemistry
• ρ, measures sensitivity to the interest rate in finance

Places

• Rho, Lombardy, Italy
• Rho railway station
• Ro, Greece, or Rho, a Greek island
• Rho Islands, Antarctica
• Rho River, tributary of the Dora di Bardonecchia, Italy

Other uses

• Right-hand opponent, in contract bridge
• Red Hot Organization, an American non-profit
• Rhodes International Airport, IATA airport code RHO
• Giacomo Rho (1593–1638), Italian Jesuit missionary in China

See also

• RO (disambiguation)