ecthesis

== English == === Etymology === From Ancient Greek ἐκθετικός (ekthetikós). === Noun === ecthesis (uncountable) (logic, historical) An exposition or setting out; used by Aristotle in setting forth various proofs, though the nature of the process is disputed; perhaps simply writing out in letter notation. ==== Related terms ==== ecthetic ecthetically ==== See also ==== The Ecthesis: a letter published in 638 CE by the Byzantine emperor Heraclius which defined Monothelitism as the official imperial form of Christianity.