Mo. Rev. Stat. § 545.900: Defendant on bail — discharged if not tried before end of third term.

If any person indicted for any offense, and held to answer on bail, shall not be brought to trial before the end of the third term of the court in which the cause is pending which shall be held after such indictment found, he shall be entitled to be discharged, so far as relates to such offense, unless the delay happened on his application, or be occasioned by the want of time to try such cause at such third term.