columnar

adjectives

having the form of a column

"trees with columniform trunks"; "columnar forms"; "a columnlike tree trunk"

columnar, columniform, columnlike

is derived from

characterized by columns

"columnar construction"

columnar

is derived from

is similar to

having or resembling columns; having columns of a specified kind (often used as a combining form)

"a columned portico"; "trees with columned trunks"; "white-columned houses"