01 a. Of or pertaining to a zone; having the form of a zone or zones.
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1.
Of or pertaining to a zone; having the form of a zone or zones.
Phrases & compounds
Zonal equation —
the mathematical relation which belongs to all the planes of a zone, and expresses their common position with reference to the axes.
Zonal structure —
a structure characterized by the arrangements of color, inclusions, etc., of a crystal in parallel or concentric layers, which usually follow the outline of the crystal, and mark the changes that have taken place during its growth.
Zonal symmetry —
See the Note under Symmetry.