• synonyms


noun, plural rhos.
  1. the 17th letter of the Greek alphabet (P, ρ).
  2. the consonant sound represented by this letter.
Show More

Origin of rho

1350–1400; Middle English < Greek rhô


or Rhod

  1. Rhodesia.
Show More
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for rho

Contemporary Examples

Historical Examples

British Dictionary definitions for rho


noun plural rhos
  1. the 17th letter in the Greek alphabet (Ρ, ρ), a consonant transliterated as r or rh
Show More
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

rho in Medicine


  1. The 17th letter of the Greek alphabet.
Show More
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.