Definition: A sermon (noun) refers to an oration given as a lecture by a speaker, usually on a subject related to Christian beliefs or faith. The term is also used in other contexts to describe an address or presentation. The word "sermon" is derived from the Greek word "sēmō," which means "to speak." In English, it is often shortened to simply "sermon." In the context of Christianity, a sermon can refer to a speech given by an individual to a group of people, usually addressing the faith or doctrine of Jesus Christ. It may be delivered in a setting like a church service, a public forum, or even on the spot at a funeral or memorial service. The term "sermon" is often used with other words such as "preacher," "lecturer," and "speaker." For example, "I preached a sermon last week," would typically mean that someone gave an address to an audience. In summary, "sermon" refers to an oration given in a Christian context on the faith of Jesus Christ. It is often shortened to simply "sermon," and it can also refer to an address, presentation, or speech by an individual addressing a group of people.