What does ICZ stand for?

Canoe Outfitters LLC, Eau Claire, WI - Manufacturer code for watercraft hull identification number (USCG)

International Climate Zone

International Congress of Zoology (SAUO)

Intertropical Convergence Zone - Trade winds - Meteorology

Isthmian Canal Zone

North Park College and Theological Seminary, Chicago, IL - OCLC symbol (OCLC)