jactitation noun. 
[dʒaktɪ'teɪʃ(ǝ)n] M17.[medieval Latin jactitatio(n-) false declaration tending to someone's detriment, from Latin jactitare bring forward in public, utter, (later) boast, frequentative of jactare: see JACTATION, -ATION. In sense 2 app. an expressive extension of JACTATION 2.]1.  Public display or declaration, esp. of a boastful nature; boasting, bragging. Now 
rare or 
obsolete exc. in 
jactitation of marriage below. 
M17.jactitation of marriage Law false declaration that one is married to a specified person.
2.  Medicine. Orig., = 
JACTATION 2. Now, convulsive movement of a limb, muscle, or muscle group. 
M17.  [TahlilGaran] English Dictionary ▲