Meaning of epitasis

e•pit•a•sis

Pronunciation: (i-pit'u-sis), [key]
— pl. -ses
  1. the part of an ancient drama, following the protasis, in which the main action is developed. Cf. catastasis, catastrophe (def. 4),
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.