1 [mon-oh]
noun Informal.
infectious mononucleosis.

by shortening Unabridged


2 [mon-oh]
monophonic ( def 2 ).

by shortening


a combining form meaning “alone,” “single,” “one” (monogamy ); specialized in some scientific terms to denote a monomolecular thickness (monolayer ) and adapted in chemistry to apply to compounds containing one atom of a particular element (monohydrate ).
Also, especially before a vowel, mon-.

< Greek, combining form of mónos alone Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
mono (ˈmɒnəʊ)
1.  short for monophonic
2.  monophonic sound; monophony

mono- or (before a vowel) mon-
combining form
1.  one; single: monochrome; monorail
2.  indicating that a chemical compound contains a single specified atom or group: monoxide
[from Greek monos]
mon- or (before a vowel) mon-
combining form
[from Greek monos]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

from Gk. mono-, comb. form of monos "single, alone," from PIE base *men- "small, isolated," also represented by Gk. manos "rare, sparse," and perhaps by Eng. minnow.

"not stereo," 1959, from monophonic, attested from 1958 in the recording sense, from mono- + -phonic, from Gk. phone "sound, voice" (see fame). Earlier used among printers for "monotype machine" (c.1925) and generally for monochrome (motorcar, etc.), 1940s.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

mono- or mon-

  1. One; single; alone: monomorphic.

  2. Monomolecular; monatomic: monolayer.

  3. Containing one atom, molecule, or group: monomer.

mono mon·o (mŏn'ō)
Infectious mononucleosis.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
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® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Computing Dictionary

Mono definition

software, .NET
An open source .NET framework for Unix.
Mono Home (
The Free On-line Dictionary of Computing, © Denis Howe 2010
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American Heritage
Abbreviations & Acronyms
  1. monaural

  2. mononucleosis

  3. monophonic

The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Example sentences
Given that the software to do this is built in to the app itself, you could use any old stereo to mono splitter to do the job.
Trouble is, only certain mono recordings encode music laterally, in the left-to-right axis of the groove.
Second, our academic format stems from the days of typewriters, which produced mono-spaced type.
Types of craft available include catamarans and mono-hull yachts with up to three cabins.
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