Search Result for "valency": 
Wordnet 3.0

NOUN (3)

1. the phenomenon of forming chemical bonds;

2. (biology) a relative capacity to unite or react or interact as with antigens or a biological substrate;
[syn: valence, valency]

3. (chemistry) a property of atoms or radicals; their combining power given in terms of the number of hydrogen atoms (or the equivalent);
[syn: valence, valency]

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3 definitions retrieved:

The Collaborative International Dictionary of English v.0.48:

Valency \Val"en*cy\, n.; pl. Valencies. (Chem.) (a) See Valence. (b) A unit of combining power; a so-called bond of affinity. [1913 Webster]
WordNet (r) 3.0 (2006):

valency n 1: the phenomenon of forming chemical bonds 2: (biology) a relative capacity to unite or react or interact as with antigens or a biological substrate [syn: valence, valency] 3: (chemistry) a property of atoms or radicals; their combining power given in terms of the number of hydrogen atoms (or the equivalent) [syn: valence, valency]
The Free On-line Dictionary of Computing (18 March 2015):

degree valency The degree (or valency) of a node in a graph is the number of edges joined to it.