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ρ (EN)
文字、記号

文字 “ρ”

ρ, rho
  1. ギリシャ文字の第17字母。
    In the Greek alphabet, ρ comes after π.

記号 “ρ”

ρ
  1. (物理学)密度の記号
    The density of an object is often represented by ρ in physics equations.
  2. (数学で)半径や他の量を表す変数。
    In spherical coordinates, ρ denotes the distance from the origin.