Definify.com
Webster 1913 Edition
Catastasis
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Ca-tas′ta-sis
,Noun.
[NL., fr. Gr. [GREEK], fr. [GREEK] to set;
κατά
down + [GREEK] to place.] 1.
(Rhet.)
That part of a speech, usually the exordium, in which the orator sets forth the subject matter to be discussed.
2.
(Med.)
The state, or condition of anything; constitution; habit of body.