sphacelismn.
Etymology: < French sphacélisme or modern Latin sphacelismus (Greek σϕακελισμός).Previous versions of the OED give the stress as: ˈsphacelism.
rare.
1656 T. Blount Sphaselism, an ulcer eating in the brain.
This entry has not yet been fully updated (first published 1914; most recently modified version published online June 2019).