# Zonal equation

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Zonal equation
Zonal on"al, a. [L. zonalis.] Of or pertaining to a zone; having the form of a zone or zones. [1913 Webster]

{Zonal equation} (Crystallog.), the mathematical relation which belongs to all the planes of a zone, and expresses their common position with reference to the axes.

{Zonal structure} (Crystallog.), 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}. (Biol.) See the Note under {Symmetry}. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

### Look at other dictionaries:

• zonal equation — noun : the mathematical relation that belongs to all the planes of a zone of a crystal and expresses their common position with reference to the axes …   Useful english dictionary

• Zonal — on al, a. [L. zonalis.] Of or pertaining to a zone; having the form of a zone or zones. [1913 Webster] {Zonal equation} (Crystallog.), the mathematical relation which belongs to all the planes of a zone, and expresses their common position with… …   The Collaborative International Dictionary of English

• Zonal structure — Zonal on al, a. [L. zonalis.] Of or pertaining to a zone; having the form of a zone or zones. [1913 Webster] {Zonal equation} (Crystallog.), the mathematical relation which belongs to all the planes of a zone, and expresses their common position …   The Collaborative International Dictionary of English

• Zonal symmetry — Zonal on al, a. [L. zonalis.] Of or pertaining to a zone; having the form of a zone or zones. [1913 Webster] {Zonal equation} (Crystallog.), the mathematical relation which belongs to all the planes of a zone, and expresses their common position …   The Collaborative International Dictionary of English

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