Mid 17th century; earliest use found in Henry Hammond (1605–1660), Church of England clergyman and theologian. From classical Latin abstinentiaabstinence + -al.
Definition of abstinential in US English:
abstinential
adjectiveabstɪˈnɛnʃl
rare
Of or relating to abstinence.
Origin
Mid 17th century; earliest use found in Henry Hammond (1605–1660), Church of England clergyman and theologian. From classical Latin abstinentia abstinence + -al.