Definition of paratonia in English:

paratonia

Pronunciation /ˌparəˈtəʊnɪə/

noun

Medicine
  • Muscle spasm or rigidity; (in later use) specifically muscle rigidity occurring in resistance to, or as failure of relaxation after, passive movement, seen especially in disorders of the cerebral cortex.

Origin

Mid 19th century; earliest use found in Robley Dunglison (1798–1869), physician and medical writer. From para- + -tonia.