The definition of a sermon is a lecture, speech or talk about moral or spiritual issues, especially when the talk is administered formally in a church or religious setting.(noun)
See sermon in Webster's New World College Dictionary
Origin: OFr < LL(Ec) sermo < L, a talk, discourse < IE base *swer-, to speak > swear
See sermon in American Heritage Dictionary 4
Origin: Middle English
Origin: , from Old French
Origin: , from Latin sermō, sermōn-, discourse; see ser-2 in Indo-European roots.
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