1. The art of speaking in public with style, cogency, and grace: In her English class, Alice could specialize in the competence of presenting an oratory, and at the end of the semester, give a speech to the parents of the students.
2. Eloquence in public speaking, especially of the kind that shows the speaker's rhetorical skills: In the debate club, Roger showed much expertise in the oratory he was presenting , and could easily sway his audience in the topic at hand.