Mid 17th century; earliest use found in Oliver Cromwell (1599–1658), lord protector of England, Scotland, and Ireland. From classical Latin ōrātororator + -ic, after Greek formations such as historic, rhetoric.
Definition of oratoric in US English:
oratoric
adjective
rare
Of or relating to oratory; = "oratorial".
Origin
Mid 17th century; earliest use found in Oliver Cromwell (1599–1658), lord protector of England, Scotland, and Ireland. From classical Latin ōrātor orator + -ic, after Greek formations such as historic, rhetoric.