Zonal structure

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 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.

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  • zonal structure — noun : a structure characterized by the arrangements (as of color or inclusions) of a crystal in parallel or concentric layers that usually follow the outline of the crystal and mark the changes that have taken place during its growth …   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 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 …   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

  • Zonal spherical function — In mathematics, a zonal spherical function or often just spherical function is a function on a locally compact group G with compact subgroup K (often a maximal compact subgroup) that arises as the matrix coefficient of a K invariant vector in an… …   Wikipedia

  • zonal — adjective 1. relating to or of the nature of a zone the zonal frontier • Syn: ↑zonary • Pertains to noun: ↑zone • Derivationally related forms: ↑zone (for: ↑ …   Useful english dictionary

  • Indian Railway organisational structure — The Indian Railways is organised broadly by functional groups. This is traditionally how Railways are organised the world over. The Indian Railways perhaps has been less adventurous in changing the structure; it has largely kept up what it got as …   Wikipedia

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  • Urban structure — is the arrangement of land use in urban areas. Sociologists, economists, and geographers have developed several models, explaining where different types of people and businesses tend to exist within the urban setting. Three models are described… …   Wikipedia

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