Meaning of monovalency in English:
monovalency
Pronunciation /ˌmɒnə(ʊ)ˈveɪlənsi/ /ˌmɒnə(ʊ)ˈveɪl(ə)nsi/
noun
The property (now especially that of an antigen or antibody) of being monovalent.
Origin
Late 19th century; earliest use found in The Century Dictionary. From mono- + -valency, after monovalent.