1620-30; < Latinappetentia a craving for, equivalent to appetent- (stem of appetēns, present participle of appetere; see appetence) + -ia-ia; see -ency
British Dictionary definitions for appetency
appetence
/ˈæpɪtəns/
noun (pl) -tences, -tencies
1.
a natural craving or desire
2.
a natural or instinctive inclination
3.
an attraction or affinity
Word Origin
C17: from Latin appetentia, from appetere to crave