[ room ]
/ rum /


a thin discharge of the mucous membranes, especially during a cold.
catarrh; cold.

Origin of rheum

1350–1400; Middle English reume < Late Latin rheuma < Greek rheûma (rheu-, variant stem of rheîn to flow, stream + -ma noun suffix of result)

Related forms

rheum·ic, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for rheum

British Dictionary definitions for rheum


/ (ruːm) /


a watery discharge from the eyes or nose

Word Origin for rheum

C14: from Old French reume, ultimately from Greek rheuma bodily humour, stream, from rhein to flow
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

Medicine definitions for rheum


[ rōōm ]


A watery or thin mucous discharge from the eyes or nose.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.