Also found in: Medical.
Flow; discharge: seborrhea.
[New Latin -rrhoea, from Greek -rrhoia, from rhoia, a flowing, from rhein, to flow; see sreu- in Indo-European roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
a combining form meaning “flow,” “discharge”: menorrhea; pyorrhea.
[< New Latin -rrhoea < Greek -rrhoia, comb. form representing rhoía a flow, akin to rheîn to flow, stream]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.