Longman Dictionary of Contemporary English homepage

Topic: CHEMISTRY

Date: 1800-1900
Language: Late Latin
Origin: valentia 'power, ability', from valere; VALOR

valence

 noun
     
va‧len‧ce also va‧len‧cy [countable] technical
1HC a measure of the power of atoms to combine together to form compounds
2x-ref another spelling of valance
Definition of valence from the Longman Dictionary of Contemporary English within
the topic CHEMISTRY
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