The state a sime reaches when near or at death from having consumed all the selyn (life energy) in his system.
(Source: Index card file, Sime Surgeon -- http://www.simegen.com/sgfandom/rimonslibrary/surgeon/SURGEON1.html an early draft of Unto Zeor, Forever) The last stages of need before death. Digen Farris suffers psycho-attrition, brought on by prolonged stimulation of his Need by Hayashi and Imrahan.
Characterized by pre-attritional metabolic shutdown and falling temperature, no (or reduced) salivation, hugh excesses of ronaplin being produced.
(Source: Index card file, Unto Zeor, Forever) Eyes dilated in last stages. Selyn shutdown: "cold, dead, black inside." body shut down, dropped all selyn use to basal level and below. Muscles clenched against each other in spasms of shivering. Internal balance disintegrated -- primary system didn't have strength (low in selyn) to control the harmonics bursting loose in the secondary system, and the vibration wracked Digen trautholo -- Imrahan (a/k/a Im) pulled him into Tecton rhythm.