adjective Chemistry.
having a valence of two, as the ferrous ion, Fe ++ .

1865–70; di-1 + -valent

divalence, noun
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World English Dictionary
divalent (daɪˈveɪlənt, ˈdaɪˌveɪ-)
1.  having a valency of two
2.  having two valencies

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American Heritage
Medical Dictionary

divalent di·va·lent (dī-vā'lənt)

di·va'lence or di·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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Example sentences
Additionally, their kidneys selectively filter out divalent ions, which they then excrete.
Such iron configurations are well known as the so-called low spin divalent iron.
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