Definition of polyzonal in English:

polyzonal

Pronunciation /ˌpɒlɪˈzəʊnl/

adjective

  • Divided into or comprising several zones; occupying or involving several zones.

    Recorded earliest in polyzonal lens.

Origin

Early 19th century; earliest use found in David Brewster (1781–1868), natural philosopher and academic administrator. From poly- + zone + -al.