[yoo-nuh-vey-luh nt, yoo-niv-uh-]
  1. Chemistry. having a valence of one; monovalent.
  2. Genetics. (of a chromosome) single; unpaired; not possessing or joining its homologous chromosome in synapsis.

Origin of univalent

First recorded in 1865–70; uni- + -valent
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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Historical Examples of univalent

British Dictionary definitions for univalent


  1. (of a chromosome during meiosis) not paired with its homologue
  2. chem another word for monovalent
Derived Formsunivalency, noun
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

univalent in Medicine


  1. Having valence 1.
  2. Having only one valence.
  3. Of or relating to a chromosome that is not paired or united with its homologous chromosome during synapsis.
  1. A univalent chromosome.
Related formsu′ni•valence null n.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

univalent in Science


  1. Having a valence of 1.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.