1. A religious discourse, especially one delivered as part of a service.
2. An often lengthy and tedious speech of reproof or exhortation: "his father's Teutonic and pedestrian sermon on the safety of staying home" (Paul Theroux).
[Middle English, from Old French, from Latin sermō, sermōn-, discourse; see ser-2 in the Appendix of Indo-European roots.]
ser·monic (-mŏnĭk), ser·moni·cal (-ĭ-kəl) adj.
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Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.