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bivalent

[bahy-vey-luh nt, biv-uh-] /baɪˈveɪ lənt, ˈbɪv ə-/
adjective
1.
Chemistry.
  1. having a valence of two.
  2. having two valences, as aluminum with valences of two and three.
2.
Genetics. pertaining to associations of two homologous chromosomes.
noun
3.
Genetics. a pair of bivalent chromosomes, especially when pairing during meiosis.
Origin
1865-1870
1865-70; bi-1 + -valent
Related forms
bivalence
[bahy-vey-luh ns, biv-uh-luh ns] /baɪˈveɪ ləns, ˈbɪv ə ləns/ (Show IPA),
bivalency, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for bivalence

bivalence

/baɪˈveɪləns; ˈbɪvə-/
noun
1.
(logic, philosophy) the semantic principle that there are exactly two truth values, so that every meaningful statement is either true or false Compare many-valued logic

bivalent

/baɪˈveɪlənt; ˈbɪvə-/
adjective
1.
(chem) another word for divalent
2.
(of homologous chromosomes) associated together in pairs
noun
3.
a structure formed during meiosis consisting of two homologous chromosomes associated together
Derived Forms
bivalency, 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
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Word Origin and History for bivalence
n.

1868; see bivalent + -ence.

bivalent

adj.

1864, of chemicals, 1899, of chromosomes, from bi- + -valent, from Latin valentem, present participle of valere "be worth" (see valiant).

Online Etymology Dictionary, © 2010 Douglas Harper
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bivalence in Medicine

bivalent bi·va·lent (bī-vā'lənt)
adj.

  1. Having a valence of 2; divalent.

  2. Consisting of a pair of homologous, synapsed chromosomes, as occurs during meiosis; double.

n.
A pair of homologous, synapsed chromosomes associated together during meiosis.
bi·va'lence or bi·va'len·cy n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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bivalence in Science
bivalent
  (bī-vā'lənt)   
Chemistry Having a valence of 2.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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