Definition of antecedency in English:
antecedency
noun ˈantɪsiːd(ə)nsiˌantɪˈsiːd(ə)nsi
Precedence in time or order; (occasionally) an instance of this.
Origin
Late 16th century; earliest use found in John Florio (1553–1625), author and teacher of languages. From classical Latin antecēdentia antecedence; compare -y, -ency.