oro-

(redirected from orrho-)
Also found in: Medical.

oro-

(word root) mouth
Examples of words with the root oro-: oropharynx
Abused, Confused, & Misused Words by Mary Embree Copyright © 2007, 2013 by Mary Embree

oro-

pref.
Mountain: orogeny.

[Greek, from oros, mountain.]
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.

oro-

combining form
mountain: orogeny; orography.
[from Greek oros]

oro-

combining form
oral; mouth: oromaxillary.
[from Latin, from ōs]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

oro-1

,
a combining form meaning “mountain”: orography.
[< Greek]

oro-2

,
a combining form meaning “mouth”: oropharynx.
[comb. representing Latin ōs, s. ōr-]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.