Rho (disambiguation)

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

Rho or RHO also may refer to:

Science and medicine

 * Rho family of GTPases
 * RHOA
 * RHOB
 * RhoC


 * RHO (gene), or Rhodopsin

ρ as a conventional symbol

 * in mathematics
 * A length coordinate in coordinate systems with both length and angle coordinates:
 * Polar coordinate system
 * Spherical coordinate system
 * Cylindrical coordinate system
 * Toroidal coordinate system
 * Toroidal and poloidal coordinates of the Earth's magnetic field
 * Spectral radius of a square matrix
 * Pollard's rho algorithm
 * Pollard's rho algorithm for logarithms
 * Prime constant
 * Plastic ratio


 * in physics
 * Density of a material
 * Volume charge density
 * Resistivity of a material
 * Rho meson


 * in biology
 * Rho factor protein in RNA transcription termination
 * Ecology, population damping ratio where ρ = λ1 / |λ2|.


 * in statistics
 * Spearman's rank correlation coefficient
 * Pearson product-moment correlation coefficient


 * in other fields
 * The reaction constant in the Hammett equation in chemistry
 * Rho (finance)

Toponyms

 * Rho, Lombardy, a town in Italy
 * Rho Island, a.k.a. Ro, Greece
 * Rho River, tributary of the Dora di Bardonecchia, Italy

Acronyms and abbreviations RHO

 * Right-Hand Opponent, in contract bridge
 * Red Hot Organization, HIV/AIDS-related charity
 * Rhodes International Airport, in Greeter using

People

 * Giacomo Rho (1593–1638), Italian Jesuit missionary in China