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ColumnarColumnar 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. Columnar epitheliumColumnar 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. Columnar structureStructure 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;
construction. [R.]
His son builds on, and never is content Till the
last farthing is in structure spent. --J. Dryden,
Jr.
2. Manner of building; form; make; construction.
Want of insight into the structure and constitution
of the terraqueous globe. --Woodward.
3. Arrangement of parts, of organs, or of constituent
particles, in a substance or body; as, the structure of a
rock or a mineral; the structure of a sentence.
It [basalt] has often a prismatic structure. --Dana.
4. (Biol.) Manner of organization; the arrangement of the
different tissues or parts of animal and vegetable
organisms; as, organic structure, or the structure of
animals and plants; cellular structure.
5. That which is built; a building; esp., a building of some
size or magnificence; an edifice.
There stands a structure of majestic frame. --Pope.
Columnar structure. See under Columnar. Columnar structureColumnar 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. Columnarity
Columnarity Col`um*nar"i*ty, n.
The state or quality of being columnar.
Columnated
Columnated Co*lum"na*ted, a.
Having columns; as, columnated temples.
Semicolumnar
Semicolumnar Sem`i*co*lum"nar, a.
Like a semicolumn; flat on one side and round on the other;
imperfectly columnar.
Subcolumnar
Subcolumnar Sub`co*lum"nar, a. (Geol.)
Having an imperfect or interrupted columnar structure.
Meaning of COLUMNA from wikipedia
