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From The Collaborative International Dictionary of English v.0.48:
Jactitation \Jac"ti*ta"tion\, n. [L. jactitare to utter in public, from jactare. See Jactancy.] [1913 Webster] 1. (Law) Vain boasting or assertions repeated to the prejudice of another's right; false claim. --Mozley & W. [1913 Webster] 2. (Med.) A frequent tossing or moving of the body; restlessness, as in delirium. --Dunglison. [1913 Webster] Jactitation of marriage (Eng. Eccl. Law), a giving out or boasting by a party that he or she is married to another, whereby a common reputation of their matrimony may ensue. --Blackstone. [1913 Webster]