jactitation1 /ˌjaktəˈtāSH(ə)n, ˌdʒæktəˈteɪʃ(ə)n 
/ ▸ noun Medicine the restless tossing of the body in illness. ▪ the twitching of a limb or muscle.
– ORIGIN mid 17th century : expressive extension of earlier jactation ‘restless tossing’, from Latin jactare ‘to throw’.
EnglishOxford New American Dictionary
