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Definitions for: Columnar
[adj] characterized by columns; "columnar construction"
[adj] having the form of a column; "trees with columned trunks"; "columnar forms"; "a columnlike tree trunk"
Webster (1913) Definition: 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.
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.
Synonyms: columned, columniform, columnlike
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