noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   An inflammatory disease affecting multiple muscles uncountable
2. 2
   myositis characterized by weakness of limb and neck muscles and much muscle pain and swelling; progression and severity vary among individuals wordnet

Etymology

From poly- + myositis.

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