Legal Definition of functus officio
: of no further official authority or legal effect <the warrant… had been returned and was functus officio — Cady v. Dombrowski, 413 U.S. 433 (1973)> <once an arbitrator makes an award she is functus officio> —used especially of an officer who is no longer in office or of an instrument that has fulfilled its purpose
Origin and Etymology of functus officio
Latin, having performed his duty, having served its purpose
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Dictionary: Definition of functus officio
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