a zone in central Panama, crossing the Isthmus of Panama on both sides of the Panama Canal: governed by the U.S. from 1903 until 1979, when most of the zone was returned to Panama, for its eventual control of the entire zone by 2000; about 10 miles (16 km) wide; excludes the cities of Panama and Colón. 44,650; 553 sq. mi. (1432 sq. km). Abbreviation: CZ (for use with zip code), C. Z.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a former administrative region of the US, on the Isthmus of Panama around the Panama Canal: bordered on each side by the Republic of Panama, into which it was incorporated in 1979Also called: Panama Canal Zone
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012