Webster
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Webster’s Revised Unabridged Dictionary · 1913

Polyzonal

Pol′y·zon′al (·zōn′al), a. [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.

Webster’s Revised Unabridged Dictionary, Noah Porter, editor (Springfield, Mass.: G. & C. Merriam, 1913). Public domain. Text as transcribed by MICRA, Inc., from Project Gutenberg. Changed for Deep Dive Bible: Greek, which our source spelled in Latin letters, set in Greek letters; entries of one spelling merged into one article.