columnar
a . 圆柱的,圆筒形的,分纵栏印刷或书写的
圆柱的,圆筒形的,分纵栏印刷或书写的
columnar adj 1 :
having the form of a column ; "
trees with columniform trunks "; "
columnar forms "; "
a columnlike tree trunk "
[
synonym : {
columniform }, {
columnar }, {
columnlike }]
2 :
characterized by columns ; "
columnar construction "
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 ]
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