noun, plural rhos.

the 17th letter of the Greek alphabet (P, ρ).
the consonant sound represented by this letter.

Origin of rho

1350–1400; Middle English < Greek rhô


or Rhod

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for rho

Contemporary Examples of rho

Historical Examples of rho

British Dictionary definitions for rho


noun plural rhos

the 17th letter in the Greek alphabet (Ρ, ρ), a consonant transliterated as r or rh
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



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