Polyzonal definitions

Polyzonal

• (a.) Consisting of many zones or rings.
Found on http://thinkexist.com/dictionary/meaning/polyzonal/

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Polyzonal

Pol`y·zon'al adjective [ Poly- + zonal .] Consisting of many zones or rings. Polyzonal lens (Opt.) , a lens made up of pieces arranged zones or rings, -- used in the lanterns of lighthouses.
Found on http://www.encyclo.co.uk/webster/P/125

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