Dictionary.com
definitions

monomer

[mon-uh-mer]
noun Chemistry.
  1. a molecule of low molecular weight capable of reacting with identical or different molecules of low molecular weight to form a polymer.

Origin of monomer

First recorded in 1910–15; mono- + -mer
Related formsmon·o·mer·ic [mon-uh-mer-ik] /ˌmɒn əˈmɛr ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for monomer

monomer

noun
  1. chem a compound whose molecules can join together to form a polymer
Derived Formsmonomeric (ˌmɒnəˈmɛrɪk), adjective
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
Word Origin and History for monomer
n.

1914, from mono- + Greek meros "part" (see merit (n.)). Related: Monomerous.

Online Etymology Dictionary, © 2010 Douglas Harper
monomer in Medicine

monomer

[mŏn′ə-mər]
n.
  1. The molecular unit that joins with similar units to form a polymer.
  2. The protein structural unit of a virion capsid.
  3. The subunit of a protein composed of several such units loosely associated with one another.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
monomer in Science

monomer

[mŏn′ə-mər]
  1. A molecule that can combine with others of the same kind to form a polymer. Glucose molecules, for example, are monomers that can combine to form the polymer cellulose. Polymers can also be composed of different kinds of monomers.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.