noun, plural va·len·cies. Chemistry.
noun plural -cies or -ces
- chem a property of atoms or groups, equal to the number of atoms of hydrogen that the atom or group could combine with or displace in forming compounds
- linguistics the number of satellite noun phrases with which a verb combinesthe English verb `give’ takes a subject and two objects, so it has a valency of three
- the number of antigen-binding sites on an antibody molecule
- the number of antigen-binding sites with which an antigen can combine