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rho

[roh] /roʊ/
noun, plural rhos.
1.
the 17th letter of the Greek alphabet (P, ρ).
2.
the consonant sound represented by this letter.
Origin
1350-1400
1350-1400; Middle English < Greek rhô
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for ρ

rho

/rəʊ/
noun (pl) rhos
1.
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
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ρ in Medicine

ρ
The Greek letter rho. Entries beginning with this character are alphabetized under rho.

rho n.

Symbol ρ 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.
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