The Collaborative International Dictionary
Adherency
Adherency \Ad*her"en*cy\, n.
The state or quality of being adherent; adherence. [R.]
That which adheres. [Obs.]
--Dr. H. More.
Wiktionary
adherency
n. 1 (context obsolete English) The state or quality of being adherent; adherence. 2 (context obsolete English) That which adheres.