1. Surrounding a lymphatic structure (node or vessel). 2. The spaces and tissues surrounding the membranous labyrinth of the inner ear.
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peri·lym·phat·ic .per-ə-lim-'fat-ik adj relating to or containing perilymph <\perilymphatic fistulas>
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peri·lym·phat·ic (per″e-lim-fatґik) 1. pertaining to the perilymph. 2. around a lymphatic vessel.Medical dictionary. 2011.