IPA: /ɔˈreɪʃən/
KK: /ɔˈreɪʃən/
A formal speech given on a special occasion, often with a serious or grand tone.
The president delivered an inspiring oration at the graduation ceremony.
Oration is formed from "orare" (meaning to speak) and the suffix "-tion" (indicating the action or process of). The word "oration" refers to the act or process of speaking formally, especially in a public context.
Think of 'speaking' ('orare') as the main action, and remember that 'oration' is the formal act of speaking.