Main Entry: zon·al

Pronunciation: \ˈzō-n^əl\

Function: adjective

Date: 1867

1 : of, relating to, affecting, or having the form of a zone <a zonal boundary>
2 : of, relating to, or being a soil or a major soil group marked by well-developed characteristics that are determined primarily by the action of climate and organisms (as vegetation) — compare azonal, intrazonal

— zon·al·ly \-n^əl-ē\ adverb