Definition of rho in English:


nounPlural rhos

  • 1The seventeenth letter of the Greek alphabet (Ρ, ρ), transliterated as ‘r’ or (when written with a rough breathing) ‘rh’.

    • ‘She is a member of Sigma Rho Epsilon and Phi Sigma Pi and volunteers with Special Olympics, Natural Ties Program, and Vacation Bible School.’
    • ‘This is from Kappa Delta Rho at the University of Delaware.’
    • ‘You're never going to do the conversion right if you think r is equal to phi sine theta, because it isn't; r equals rho sine theta.’
    • ‘That's how they ranked us: Alpha, Beta, Gamma, which was yours truly, Delta, then Rho and Sigma.’
    • ‘Alpha, rho, tau, sigma, omega: Ash went over the letters he saw in his mind while Lari just stared, apparently in her own little world.’
    • ‘Those in Rho Chi and Phi Lambda Sigma share common interests in attaining and nurturing meritorious academic achievement.’
    • ‘In some instances student groups such as Academy of Students of Pharmacy, Student Council, Rho Chi, Phi Lambda Sigma, or professional fraternities conducted the nominations and elections.’
    • ‘He had a dream in which he saw the chi and the rho, the first two Greek letters of Jesus' name, saying ‘In this sign, conquer’, and so he had that emblazoned on a banner he went out the next day under the name of the crucified.’
    • ‘You can see the X symbol commonly today in the overprinted P and X symbols used by Catholics (meaning chi and rho - the first two letters of Christ's name).’
    1. 1.1Astronomy followed by Latin genitive The seventeenth star in a constellation.
      ‘Rho Cassiopeiae’
      • ‘The final list at the close of the book includes 47 Ursae Majoris, Rho Cancri A, Tau Boötis A, and Upsilon Andromedae.’
      • ‘For nearly a decade, astronomers have patiently watched Rho Cassiopeiae, a bloated, relatively cool star 500,000 times brighter than the sun.’
      • ‘Only a dozen such hypergiants are known, and scientists suspect that Rho Cassiopeiae will soon destroy itself in a supernova explosion.’

  • 1Density.

  • 2Spearman's correlation coefficient.