valency

Same as valence, 1.

A single unit of combining capacity. Thus, carbon is said to have four valencies.

See valence.

A unit of combining power; a so-called bond of affinity.

The number of edges connected to a vertex in a graph

valence

The capacity of a verb to take a specific number of arguments

the phenomenon of forming chemical bonds

(biology) a relative capacity to unite or react or interact as with antigens or a biological substrate