labyrinthotomy

Incision into the labyrinth. [labyrinth + G. tome, incision]

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lab·y·rin·thot·o·my .lab-ə-rin-'thät-ə-mē n, pl -mies surgical incision into the labyrinth of the inner ear

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lab·y·rin·thot·o·my (lab″ə-rin-thotґə-me) [labyrinth + Gr. temnein to cut] surgical incision into the internal ear.