noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A form of parkinsonism, believed to be caused by a viral illness, that triggers degeneration of the nerve cells in the substantia nigra and leads to encephalitis. uncountable, usually

Etymology

From post- + encephalitis.

Related phrases

nerve cellsubstantia nigra

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.