Oration/ɔːˈreɪʃn/ Definition 1 of 2Pro Tip 1/3Ceremonial Usage Use 'oration' for speeches at formal events like graduations or inaugurations. The mayor's oration at the city hall unveiling was moving. Pro Tip 2/3Not for Conversations 'Oration' implies a structured, often one-sided speech, not a dialogue between people. The valedictorian prepared an oration, not a casual talk. Pro Tip 3/3Prepared Speech An oration is typically written out and practiced beforehand, unlike impromptu remarks. Her oration was carefully crafted for the commemorative event.