Epitasis
Epitasis , noun
[New Latin, from Greek {not transcribed} a stretching, from {not transcribed} to stretch upon or over; 'epi` upon + {not transcribed} to stretch.]
1.
That part which embraces the main action of a play, poem, and the like, and leads on to the catastrophe; -- opposed to protasis.
2.
(Medicine) The period of violence in a fever or disease; paroxysm. — Dunglison