"valency" in the noun sense
the phenomenon of forming chemical bonds
2. valence, valency
biology) a relative capacity to unite or react or interact as with antigens or a biological substrate
3. valence, valency
chemistry) a property of atoms or radicals their combining power given in terms of the number of hydrogen atoms (or the equivalent)
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License