From zonal + -ly.
zonally (comparative more zonally, superlative most zonally)
- in zones.
- in a manner related to, associated with, or similar to zones.
- “zonally” in The American Heritage Dictionary of the English Language, Fourth Edition, Houghton Mifflin Company, 2000.
- “zonally” in Dictionary.com Unabridged, v1.0.1, Lexico Publishing Group, 2006.