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mono-(word root) one, single
Examples of words with the root mono-: monocable
Abused, Confused, & Misused Words by Mary Embree Copyright © 2007, 2013 by Mary Embree
1. One; single; alone: monomorphic.
2. Containing a single atom, radical, or group: monobasic.
3. Monomolecular; monatomic: monolayer.
[Middle English, from Old French, from Latin, from Greek, from monos, single, alone; see men- 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.
mono-or before a vowel
1. one; single: monochrome; monorail.
2. (Chemistry) indicating that a chemical compound contains a single specified atom or group: monoxide.
[from Greek monos]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a combining form meaning “one, single, lone” (monochromatic; monogamy), “containing one atom or group of a given kind” (monoamine).Also, esp. before a vowel,mon-.
[< Greek, comb. form of mónos alone]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
A prefix that means "one, only, single," as in monochromatic, having only one color. It is often found in chemical names where it means "containing just one" of the specified atom or group, as in carbon monoxide, which is carbon attached to a single oxygen atom.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
mono-[ˌmɒnəʊ-] prefix → mono-
Collins English/French Electronic Resource. © HarperCollins Publishers 2005
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007