Columnar structure
Columnar Co*lum"nar, a. [L. columnaris, fr. columna.] Formed in columns; having the form of a column or columns; like the shaft of a column. [1913 Webster]

{Columnar epithelium} (Anat.), epithelium in which the cells are prismatic in form, and set upright on the surface they cover.

{Columnar structure} (Geol.), a structure consisting of more or less regular columns, usually six-sided, but sometimes with eight or more sides. The columns are often fractured transversely, with a cup joint, showing a concave surface above. This structure is characteristic of certain igneous rocks, as basalt, and is due to contraction in cooling. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Columnar structure — Structure Struc ture, n. [L. structura, from struere, structum, to arrange, build, construct; perhaps akin to E. strew: cf. F. structure. Cf. {Construe}, {Destroy}, {Instrument}, {Obstruct}.] 1. The act of building; the practice of erecting… …   The Collaborative International Dictionary of English

  • Columnar structure — Columnar structure. См. Столбчатая структура. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов

  • columnar structure — noun 1. : the structure of a mineral aggregate that is made up of nearly parallel slender columns and that is intermediate between an equant and acicular structure (as in some amphiboles) 2. : a geologic structure common in basalts and other… …   Useful english dictionary

  • Columnar — Co*lum nar, a. [L. columnaris, fr. columna.] Formed in columns; having the form of a column or columns; like the shaft of a column. [1913 Webster] {Columnar epithelium} (Anat.), epithelium in which the cells are prismatic in form, and set upright …   The Collaborative International Dictionary of English

  • Columnar epithelium — Columnar Co*lum nar, a. [L. columnaris, fr. columna.] Formed in columns; having the form of a column or columns; like the shaft of a column. [1913 Webster] {Columnar epithelium} (Anat.), epithelium in which the cells are prismatic in form, and… …   The Collaborative International Dictionary of English

  • Structure — Struc ture, n. [L. structura, from struere, structum, to arrange, build, construct; perhaps akin to E. strew: cf. F. structure. Cf. {Construe}, {Destroy}, {Instrument}, {Obstruct}.] 1. The act of building; the practice of erecting buildings;… …   The Collaborative International Dictionary of English

  • Columnar phase — The columnar phase is a class of mesophases in which molecules assemble into cylindrical structures to act as mesogens. Originally, these kinds of liquid crystals were called discotic liquid crystals because the columnar structures are composed… …   Wikipedia

  • columnar — column ► NOUN 1) an upright pillar supporting an arch or other structure or standing alone as a monument. 2) a line of people or vehicles moving in the same direction. 3) a vertical division of a page or text. 4) a regular section of a newspaper… …   English terms dictionary

  • Soil structure — is determined by how individual soil granules clump or bind together and aggregate, and therefore, the arrangement of soil pores between them. Soil structure has a major influence on water and air movement, biological activity, root growth and… …   Wikipedia

  • Honeycomb structure — For other uses, see Honeycomb (disambiguation). An image of aluminum honeycomb structure …   Wikipedia

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