Definition - The art and study of the use of persuasive and effective language.

Etymology -
The word derives from the Greek rhetorike techne, art of an orator (from rhetor, orator).

Oxford English Dictionary -
Its first citation is from circa 1300:
"Geometrie, and arsmetrike, Rettorike, and ek fisike."
(13+ Seuyn Sag. 186 (W.))

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