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What does ZIP stand for?

ZIP stands for Zone Improvement Plan (US Postal Service service code)

This definition appears very frequently

See other definitions of ZIP

Other Resources:
We have 41 other meanings of ZIP in our Acronym Attic

Samples in periodicals archive:

The initials represent the Republic of South Africa, the Times Literary Supplement, the United States Air Force, What You See Is What You Get, & Zone Improvement Plan.