Rho

Rho may refer to:__NOTOC__

*Rho (letter), a letter of the Greek alphabet, upper case Ρ, lower case ρ

ymbols

;in mathematics
* Spectral radius in a spherical coordinate system

;in physics
* Density of a material
* Volume charge density
* Resistivity of a material
* Rho meson, $ho^+$, $ho^0$, $ho^-$.

;in biology
* Rho factor protein in RNA transcription termination
* Rho family of GTPases, small GTPase enzymes important in migration and stress fibre formation
* Subjective night, the inactivity period of a Circadian rhythm

;in economics
* Rho, the sensitivity of an option or to changes in interest rates

;in statistics
* Spearman's rank correlation coefficient, a non-parametric measure of correlation
* Pearson product-moment correlation coefficient, a common measure of the correlation between two variables

Places

* Rho (Italy), a town near Milan, Italy (not to be confused with Ro, Italy)
* Island of Rho, a Greek islet famous for its single resident, Despina Achladioti
* Rho River, a tributary of the Dora di Bardonecchia
* Rhodes International Airport, "Diagoras", a Greek airport whose IATA code is RHO

Other

* Giacomo Rho, Italian Jesuit missionary
* Right-Hand Opponent (RHO), in Contract Bridge
* Rho Cassiopeiae, a yellow hypergiant in the constellation Cassiopeia

ee also

* Ro (disambiguation)