1. Conduct or language inciting rebellion against the authority of a state.
2. Archaic Insurrection; rebellion.
[Middle English sedicioun, violent party strife, from Old French sedition, from Latin sēditiō, sēditiōn- : sēd-, sē-, apart; see s(w)e- in the Appendix of Indo-European roots + itiō, act of going (from itus, past participle of īre, to go; see ei- in the Appendix of Indo-European roots).]
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